Which statement describes the use of control rods? control rods are lowered into the reactor to slow down the reaction by absorbing neutrons. control rods are lowered into the reactor to speed up the reaction by releasing neutrons. control rods are raised out of the reactor to slow down the reaction by absorbing neutrons. control rods are raised out of the reactor to speed up the reaction by releasing neutrons.

Control rods are lowered into the reactor to slow down the reaction by absorbing neutrons.

Explanation: Control rods are devices that are used to control the power of nuclear reactor. They are very important safety rector because of the prompt response of the reactor. Control rods prevent neutrons from causing fission by absorbing neutrons.

Control rods has the ability to absorb neutrons to control the fission chain reaction but it is based on the choice of materials that are required which must have high neutron-absorbing abilities.

A

Explanation:

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