A surname.

(sociology) Any of various models of group behavior (such as economic behavior, criminal behavior, or consumer behavior) as the cumulative result of rational choices made by individuals expressing on their preferences and/or meeting their needs.

The choice of taking either the primary option or nothing.

Having more than one possible answer, to be chosen from a list provided.

A choice where every alternative has significant negative consequences.

(law, narcotics) The particular (usually illicit) substance that a person is addicted to. / The best-choice medication to treat a particular medical problem.

(set theory) One of the axioms of set theory, equivalent to the statement that an arbitrary direct product of non-empty sets is non-empty; any version of said axiom, for example specifying the cardinality of the number of sets from which choices are made.

(public policy, law, ethics) Supportive of a person's right to choose whether or not to have an abortion.

Having such a selection of good choices that deciding which one to pick is difficult.

The most suitable and most optimal choice. / The prime cut. / The one with the highest ranking.