Which of the following individuals has the legal capacity to contract?

The selection of seniors as individuals who have the legal capacity to contract is correct because, in legal terms, adults generally possess the capacity to enter into contracts as long as they are of sound mind and do not fall into specific categories that might impair their decision-making ability. Seniors are typically considered to have full legal capacity unless they are declared mentally incompetent by a court, which is not a general assumption based solely on age.

In contrast, people under the influence of alcohol may lack the mental clarity and judgment necessary to make informed decisions, which can render their ability to contract invalid. Minors, usually defined as individuals under the age of majority (often 18 or 19, depending on jurisdiction), also typically lack the legal capacity to contract, with some exceptions for certain types of contracts specifically permitted by law. Mental incompetents, or individuals who have been determined by a court to lack the capacity to make decisions due to mental incapacity, cannot enter into binding contracts.

Therefore, seniors are generally assumed to have the legal capacity to contract unless there are specific reasons related to their mental state that would challenge this presumption.