Question

This exercise strengthen your core, which is made up of your abdominal, back and hip muscles.

A)triceps curls
B)bicep curls
C)push up
D)plank HELPPOO

Answer 1

Plank U_U (0_0)

Step-by-step explanation:

Answer 2

The correct answer is plank

Step-by-step explanation:

Because of the way you're positioned when planking, it strains your abdominal muscles.