Amouse sees a hawk fly overhead. the mouse then runs into the nearest hole in the ground. what is the hawk flying overhead in this scenario?
a)a stimulus
b)a response
c)a developmental change
d)a unicellular organism

a) a stimulus

The hawk flying overhead is the stimulus. The mouse running to the nearest hole is the response to the stimulus.

It's obviously not a one-cell (unicellular) organism.

A developmental change is something changes because an organism is growing. Example: A tadpole going through developmental stages to change into a frog. So that answer is incorrect as well.

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.