Question

in which of the following locations can insulin be administered? wrist hip neck back of arm

Explanation:

Insulin is typically administered via subcutaneous injection. The back of the arm (specifically the subcutaneous tissue there) is a valid site for insulin injection. The wrist has too many tendons/nerves and thin tissue, the hip is not a common primary site (though sometimes used but less common than arm), and the neck is not a standard site due to anatomical risks.

Answer:

Back of arm