M<span>ayonnaise is a heterogeneous mixture</span>
Explanation:
B is the right answer because none to the others sound like a real solution
The biceps and triceps muscles work together to allow you to bend and straighten your elbow. When you want to bend your elbow, your biceps muscle contracts (Figure below), and, at the same time, the triceps muscle relaxes. The biceps is the flexor, and the triceps is the extensor of your elbow joint.
