i would think by taking all the water out and storing it somewhere else and filtering it or cleaning it then put it back
I think it’s A. Hope it helps
A I think sorry if its wrong
Orbital velocity is the velocity of celestial body/satellite revolving around another celestial body in circular orbit.
V
=
---(i)
Escape velocity is the minimum initial velocity a body should be given to escape it from gravitational field.
V
=
---- (ii)
Divide (i) and (ii)
R = radius of circular orbit, M = mass of the celestial body about which satellite/body is performing circular motion. G = Universal gravitational constant