Correct Option: C. Mr. Ignatius was not the biological father of one of their children. Detailed Explanation: In the context of "The Lekki Headmaster," the significant discovery made during the Ignatius family's visa processing was that Mr. Ignatius was not the biological father of one of their children. This revelation is crucial for several reasons:

1. Impact on Visa Processing: Visa applications often require proof of familial relationships, especially when applying for family reunification or dependent visas. If Mr. Ignatius is not the biological father of one of the children, it raises questions about the legitimacy of the family unit as presented in the application. Immigration authorities may view this as a potential case of misrepresentation, which can lead to visa denial or complications in the processing.
2. Emotional and Social Implications: This discovery can have profound emotional effects on the family. It may lead to feelings of betrayal, confusion, and distress among family members. The dynamics of the family may change, and it could affect the relationships between Mr. Ignatius, his partner, and the child in question.
3. Legal Considerations: In many jurisdictions, legal parentage can differ from biological parentage. If Mr. Ignatius has legally adopted the child or has been recognized as the father through other means (such as marriage to the biological mother), this could still impact the visa application. However, the revelation of not being the biological father could complicate matters, especially if the visa application relies heavily on biological ties.

Why Other Options Are Incorrect:

• Option A: Mr. Ignatius lost his job in the oil firm This option does not pertain to the visa processing itself. While losing a job can affect a family's financial stability and potentially their ability to support a visa application, it is not a significant discovery made during the visa processing. The focus of the question is on discoveries related to family relationships, not employment status.
• Option B: Mrs. Ignatius was not legally married to Mr. Ignatius This option could also have implications for the visa application, particularly if the visa is dependent on marital status. However, the question specifically asks for a significant discovery made during the visa processing, and the narrative context suggests that the focus was on biological relationships rather than the legality of the marriage. If they were not legally married, it would likely have been addressed earlier in the process.
• Option D: Favour failed to meet visa requirements While this could be a significant issue, it does not represent a discovery about the family dynamics or relationships. The question emphasizes a discovery that reveals something unexpected about the family, which is not captured by this option. Favour's failure to meet visa requirements is more of an administrative issue rather than a personal revelation.

Summary of Key Points:

• The significant discovery was that Mr. Ignatius was not the biological father of one of their children, impacting the visa application.
• This revelation can affect emotional dynamics within the family and raise legal questions regarding parentage.
• Other options either do not relate directly to the visa processing or do not represent a significant discovery about family relationships.
• Understanding the implications of familial relationships is crucial in visa applications, as they often hinge on biological and legal ties.