Answer:
anxiety
Explanation:
Anxiety may be defined as a disorder of one's mental health which is characterized by the feelings of anxiety, worry, or fear which are so strong that it can interfere one's daily activities and behaviors.
Anxiety is our body's natural response to stress.
In the context, whenever Bill is in the aeroplane, he feels fear of flying and his nervous system automatically arouses because of the fear. This behavior is called as anxiety.
I assume that by Will Clark you are referring to William Clark, the explorer, and not Will Clark, the former San Francisco Giant's first baseman. William Clark the explorer would have been proud of what he accomplished because he, along with Meriwether Lewis, led the American expedition across the recently acquired Louisiana Purchase in the early 1800s. Upon completing their journey, Lewis and Clark were the first in recorded history to traverse the North American continent from ocean to ocean.
All of the activities designed to get a candidate elected to public office are called campaigns. .