B

Explanation:

A minor (a person under the age of legal capacity) has limited contractual capacity. A minor cannot act as a surety, as this involves guaranteeing another’s debt, which requires full contractual capacity. Similarly, a minor cannot be a partner in a partnership, as partnerships involve mutual obligations and liabilities. However, a minor can act as an agent, as agency involves acting on behalf of a principal without necessarily incurring personal liability. Option B (agent) is correct, as minors can be appointed as agents in certain contexts. Option D is incorrect, as minors cannot be sureties or partners. Option E is incorrect, as minors can be agents. The answer “B” aligns with legal principles of agency.