16. In a 4 time signature, how many beats are there in a measure? a. four beats b. three beats c. two beats 3 17. In a 4 time signature, how many beats are there in a measure? a a one beat b. two beats C. three beats d. four beats d. one 18. How many beats are there in a measure of time signature? a. four b. three c. two 6 19. In a 8 time signature, how many beats are there in every measure? a. two beats b. three beats c. four beats 3 20. How many quarter notes are there in a measure of 4 time signature? a. four b. three C. two d. one d. six beats​