Daniel spends each morning counting every book in his personal library, as well as every kitchen utensil and dish before he will leave for work. He repeats the process when he comes home. He recognizes that this is irrational, but he becomes extremely agitated when he tries to stop. Daniel's behaviors are most symptomatic of___

Obsessive-compulsive disorder

Explanation:

Based on the scenario being described within the question it can be said that Daniel's behaviors are most symptomatic of Obsessive-compulsive disorder. This disorder, also known as OCD, is a disorder that is characterized by having unreasonable thoughts and fears that lead to becoming recurring obsessive and compulsive behaviors. Usually regarding something irrational such as Daniel is experiencing.

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.