The diagram to the right shows a planet's orbit around the Sun. At which location is the planet's orbital velocity (speed) greatest?
A
Sun

According to the second Kepler's law:

A line joining a planet and the Sun sweeps out equal areas during equal intervals of time

The planet travels faster when closer to the Sun and slower when distant.

So the answer is point A

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d