In a nuclear power plant, the nuclear reaction is kept from going critical by keeping the rate of reaction safe. how do the control rods figure into this?

a. the controls rods absorb the excess heat produced in the reaction.
b. the controls rods absorb excess neutrons, keeping them from causing too many uranium atoms to split too quickly.
c. the control rods provide additional neutrons to keep the reaction going.
d. the control rods absorb excess uranium atoms so that the reaction doesn't happen too quickly.

Correct answer is B

Explanation:

Control rods in Nuclear reactor:

During nuclear reaction when a heavy nucleus break up into two light nuclei that time neutron are release and these neutrons further break up other nucleus which release more neutrons which lead to a chain reaction. the nuclear reaction is kept from going critical by keeping the rate of reaction safe by using control rods. Controls rods absorb excess neutrons, keeping them from causing too many uranium atoms to split too quickly.

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