Drive reduction as a motivational concept is best exemplified by

The injection of heroin by an addict to avoid withdrawal symptoms.

Explanation:

The theory of Drive Reduction was developed by Clark Hull; it's aim is to show how motivation is originated from our own biological drives or needs. This theory proposed that the behavior of a person is evidenciating their own inside, physical and physiological flaws, their deficiencies. This is best exemplified as an addict injecting himself with heroin to avoid withdrawal symptoms given that it's a biological need what ends up pushing him to do so.

south, because if you took a map you would see texas is directly in the middle of east and west, but it is also downwards towards mexico, therefore it is south