Question

an important aspect of fission reactions is that they produce

which allow for chain reactions.
a electrons
b neutrons
c protons
d quarks

Explanation:

In nuclear fission reactions, neutrons are produced. These neutrons can then go on to cause further fission reactions in a chain - reaction process. Electrons are not involved in the fission chain - reaction mechanism. Protons are part of the atomic nucleus but are not the particles that propagate the chain reaction. Quarks are fundamental particles that make up protons and neutrons but are not relevant in the context of fission chain reactions.

Answer:

B. neutrons