I would say the results of the experiment but not the hypothesis, if we're saying possible corrections to the hypothesis count as something outside of it
Estuary is a partly enclosed coastal body of water by which river water is mixed with seawater. In a broad sense, the estuarine setting<span> is defined by
salinity boundaries instead of geographic boundaries. The word estuary is derived
from the Latin words aestus (“the tide”)
and aestuo (“boil”), signifying
the effect produced when tidal flow and river flow meet.</span>
<span> </span>
The correct answer is "four muscles".
Abduction and adduction are terms referring to the movement of the limbs or other body parts. More specifically, abduction refers to the pulling of the body parts away from the midline of the body, while adduction refers to the movement of any body part towards the midline of the body. Movements involving abduction incorporate two muscles, while movements involving adduction require the action of four muscles.