What is the slowing down of neutrons to increase the probability of their absorption by the atoms in uranium 235 called answer?

The correct answer is neutron moderation.

Explanation:

Neutron moderation refers to the procedure in a nuclear reaction, in which nuclear reaction functions to slow down the fast neutrons generated due to the dissociation of the atoms in the fissile components like uranium-235, in order to make them more efficient in the fission chain reaction. This moderation or slowing of the neutrons permits them to be more easily captivated by the fissile nuclei, producing more fission occurrences.

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i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year