Which of the following are true for E = mc2?

a. developed by John Dalton

b. implies that a small change in mass produces a great deal of energy

c. mainly used for nuclear reactions

d. shows the relationship between meters and energy

The question is very poor.

The answer it's fishing for is choice (b), but the only way to know that is

to observe that the others are even worse, and totally from outer space.

This is a Physics question, for heaven's sake. Real science is built on

measurements, and nothing gets done by operating with quantities like

a "small" change in mass, or a "great deal" of energy. This question

causes me to shiver with indignation.