Question

According to Kepler’s law, the radius vector sweeps out equal areas
in equal intervals of time. The law is a consequence of the conservation of

(a) angular momentum
(b) linear momentum
(c) energy
(d) all the above

Answer 1

This is kepler's second law also known as the law of areas. This law is a consequence of the the conservation of angular momentum.

Answer 2

a) angular momentum.
Kepler's law of Areas is a direct consequence of the Law of conservation of Angular momentum.