which term gives the number of cycles of a periodic function that occur in one horizontal unit?\no vertical…

which term gives the number of cycles of a periodic function that occur in one horizontal unit?\no vertical shift\no period\no frequency\no phase shift
Answer
Brief Explanations:
The vertical shift moves a function up or down. The period is the length of one - cycle of a periodic function. The frequency is the number of cycles of a periodic function that occur in one horizontal unit. The phase shift moves a function left or right.
Answer:
C. frequency