In a nuclear power reactor, a coolant continuously circulates through or near the reactor core. What is the primary purpose of the coolant?

Options

• Option A

  To increase the number of neutrons in the core

• Option B

  To remove thermal energy from the reactor core and transfer it to a heat-exchange or steam-generation system

• Option C

  To act only as a radiation shield

• Option D

  To convert uranium-238 directly into uranium-235