3. which is true about a valid scientific hypothesis?
a. it is the same as a scientific theory.
b. it is a testable statement.
c. it can be scientifically proved to be true.
d. it is never rejected.

The answer Is B.

Explanation:

A hypothesis is a suggested solution for an unexplained occurrence that does not fit into current accepted scientific theory. ... For a hypothesis to be termed a scientific hypothesis, it has to be something that can be supported or refuted through carefully crafted experimentation or observation.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

the answer would be..

b. sucking