31. The direction in which the Earth and the other solid planets—Mercury, Venus, and Mars—spins were determined from collisions with giant celestial bodies in the early history of the Solar System.
(A) spins were determined from
(B) spins were determined because of
(C) spins was determined through
(D) spin was determined by
(E) spin was determined as a result of
(A) spins were determined from
(B) spins were determined because of
(C) spins was determined through
(D) spin was determined by
(E) spin was determined as a result of
