Aform of communication that is based on a system of symbols is called

The form of communication that is based on a system of symbols is called language. Language is being defined as a way of how humans communicate through different methods such as through verbal or non-verbal communication, through symbols or even in written action.

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;

taking a bath requires the most water out of the given options because it takes a significant amount of water in order to fill a bathtub.