Question

What must happen for scientific theories to be accepted as valid?

Scientific evidence must be reported, verified, and accepted by the scientific community.

A hypothesis must be upgraded with supporting experimental evidence.

Biological manufacturers must conduct clinical trials.

The research team must apply for and receive federal funding based on several early tests.

Answer 1

Scientific evidence must be reported, verified and accepted by the scientific community

Answer 2

to be accepted as valid, a scientific theories must be :
A hypothesis must be upgraded with supporting experimental evidence
Our original hypothesis is only some sort of starting prediction that we had before the actual experiment

hope this helps