Physicists Kelvin and Helmholtz in the Last Century Proposed That

Multiple Choice

Physicists Kelvin and Helmholtz in the last century proposed that the source of the Sun's energy could be:

A) radioactive rocks
B) a slow contraction
C) meteorites falling in
D) the annihilation of antimatter
E) nuclear fusion
Section 16.2: Mass, Energy, and the Theory of Relativity