Question

Which term best describes a nuclear chain reaction?
A)self-sustaining
B)weak
C)non-explosive

Answer 1

Since we're talking about a chain reaction, I think this would be a) self-sustaining. Chain reactions are not usually described as "weak" and can be highly explosive depending upon the compounds (think Uranium!).

The first (artificial) self-sustaining nuclear reaction is attributed to Enrico Fermi in 1942. Here's a bit of history: http://www.atomicarchive.com/History/firstpile/firstpile_01.shtml

Answer 2

it was a self-sustaining

Answer 3

self sustaining