Answer
True.
Work Step by Step
A relation is a correspondence between a first set, called the domain, and a second set, called the range, such that each member of the domain corresponds to at least one member of the range.
A function is a correspondence between a first set, called the domain, and a second set, called the range, such that each member of the domain corresponds to exactly one member of the range.
Since "at least one" is achieved when "exactly one"
member of the range is in correspondence with each member of the domain,
it follows that every function is a special kind of relation.
True.
