Which describes a habit? a form of communication that helps in decision making

a behavior repeated so often, it becomes almost automatic

a physical or social condition surrounding a person

a belief or practice that is shared by a group of people

so we know the answer cannot be c because no insect or animal starts as an adult

the answer is a. a swimming larvae

because since they are sea animals they automatticaly have to know how to swim they cannot just sink to the bottom

sorry if this is the incorrect answer.