Answer:
you can either buy new earbuds, or some attatchable silicon earbud tips on amazon or some other provider
Explanation:
I believe the answer is: John Dewey
He popularized the method of taking a more functional approach ( such as experiments and direct observation) in Children's education, not reading theory alone.Because of this, John Dewey is known as <span> the father of the progressive education movement and his method has been used ever since.</span>
For this case we have the following functions:

We must find the product of both functions:

We apply distributive property term to term:

We add similar terms:

Answer:
Option B