Tennis helps with coordination. If that isn't one of the choices, let me know in a comment what the options are.
Preferences is the correct one I looked it up
B.or a cause i was in nursing for a year but i left sooo i hope i helped ~chelsea xoxo
Answer:
Environment
Explanation:
In a research study, internal validity refers to how well an experiment was carried out and to what extent the piece of evidence supports a claim.
The lesser the chance of confounding in a study the higher the internal validity.
Study of memory is possible through learning the electrical activity created by neurons.
Therefore, thunderstorm will affect the readings hence it is an Environmental threat to the internal validity.
<span>A.
Most communicable diseases are either bacterial or viral and infect the respiratory tract.</span>
