Which is true of a mechanical wave? (Hurry up please, do quick) A. It can travel in a vacuum

B. It must have a medium.

C. It must travel in empty space.

D. Both sound and light are examples

I am pretty sure the answer is B. Hope this helps

Explanation:

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".