Susannah has an intense fear of flying and endures flights with extreme distress. although she knows her fear is irrational, it is overwhelming and uncontrollable. susannah most likely suffers from:

Aerophobia

Explanation:

A phobia is an irrational fear of something. It can persist even when we know that we will not be harmed.

Aerophobia is the fear of flying or being on a flight (aeroplanes, helicopters, etc.). Experiencing this fear will often result in extreme anxiety and discomfort. Some doctors prescribe anti-anxiety medication for people who have aerophobia and need to take a flight.

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

your answer should be c) enjoy!