Final answer:
A need is related to a drive in that a need produces a drive, which in turn motivates behavior to meet that need and restore homeostasis. This concept is rooted in the drive theory of motivation.
Step-by-step explanation:
How is a need related to a drive? The correct answer is: a) A need produces a drive. According to the drive theory of motivation, when there is a deviation from homeostasis, it leads to physiological needs. These needs, in turn, result in psychological drive states that compel individuals to behave in ways that will meet the need, hence restoring balance or homeostasis. For example, a drop in blood sugar levels will create a physiological need, manifesting as the drive state of hunger, which propels you to seek food. Once you have eaten, the hunger is satisfied, and your blood sugar levels normalize.
Drive theory also explains the significance of habits in predicting how we respond to drives. Successful behaviors in reducing a drive become habitual, increasing the likelihood of repeating them in similar future situations.
As for motivation, it can be intrinsic, coming from within, or extrinsic, from external factors. Intrinsically motivated behaviors are done for personal satisfaction, while extrinsically motivated behaviors are performed for external rewards. An example of extrinsic motivation would be mowing a yard for payment, which is a behavior motivated by the external reward of money.