The correct option is B. admission of a new partner. Detailed Explanation In a partnership, the relationship between partners is based on mutual agreement and trust. The admission of a new partner signifies a significant change in the partnership structure, which can lead to the dissolution of the existing partnership. Here’s a step-by-step breakdown of why this is the case:

1. Definition of Partnership: A partnership is a business structure where two or more individuals share ownership and the responsibilities of managing the business. The terms of the partnership, including the roles and contributions of each partner, are typically outlined in a partnership agreement.
2. Dissolution of Partnership: Dissolution refers to the process of ending a partnership. This can occur for various reasons, including the death of a partner, withdrawal of a partner, or the admission of a new partner. When a new partner is admitted, it often requires a reevaluation of the partnership agreement, profit-sharing ratios, and responsibilities, which can fundamentally change the nature of the partnership.
3. Legal Implications: The admission of a new partner usually requires the consent of all existing partners unless otherwise stated in the partnership agreement. This change can lead to the dissolution of the original partnership and the formation of a new partnership with the new partner included.
4. Impact on Business Operations: The dynamics of the partnership can change significantly with the addition of a new partner. This can affect decision-making processes, profit distribution, and the overall direction of the business. Therefore, it is treated as a dissolution of the old partnership and the creation of a new one.

Why the Other Options Are Incorrect

• A. Change of partnership's head office:
• This option does not lead to dissolution. Changing the location of the partnership's head office is an operational decision and does not affect the legal structure or the agreement between partners. The partnership continues to exist as long as the partners agree to maintain it.
• C. Purchase of a large quantity of fixed asset:
• Similar to option A, purchasing fixed assets is a business decision that does not inherently change the partnership structure. It may affect the financial position of the partnership but does not dissolve the partnership itself.
• D. Retirement of a manager who is not a partner:
• The retirement of a manager who is not a partner does not impact the partnership agreement or the relationship between the partners. The partnership can continue to operate without that manager, and thus, it does not lead to dissolution.

Common Pitfalls

• Confusing Operational Changes with Structural Changes: Students often confuse changes in operations (like purchasing assets or changing locations) with changes in the partnership structure. It’s crucial to understand that dissolution is about the legal relationship between partners, not just operational decisions.
• Assuming All Changes Lead to Dissolution: Not every change in a partnership leads to dissolution. Only significant changes, such as the admission or withdrawal of partners, typically result in dissolution.

Revision Summary

• A partnership is dissolved when there is a significant change in its structure, such as the admission of a new partner.
• The admission of a new partner requires reevaluation of the partnership agreement and can fundamentally change the partnership.
• Operational changes, like changing the head office or purchasing assets, do not lead to dissolution.
• Understanding the legal implications of changes in partnership structure is crucial for recognizing when a partnership is dissolved.