<span>Marginal analysis is the process of identifying the benefits and costs of different alternatives by examining the incremental effect on total revenue and total cost caused by a very small (just one unit) change in the output or input of each alternative.</span>
B. Interact with customers after they have purchased the product.
For example, if you are having trouble with a product or it has a malfunction, you would call the customer service for the company/product for assistance.
Term total utility: The utility is the satisfaction that an individual derives from consuming a good or service. Similarly, total utility is the total satisfaction received from consuming a given total quantity of a good or service.
Marginal utility: Marginal utility is the added satisfaction a consumer gets from having one more unit of a good or service. The concept of marginal utility is used by economists to determine how much of an item consumers are willing to purchase. ... Marginal utility can be positive, zero, or negative.
Option C. When tests are used as part of the selection process, care must be taken to ensure that the test being used is both valid and reliable. A test is reliable if it consistently creates or measures accurate results time after time.
<h3>What is meant by reliability?</h3>
This is the term that is used to refer to the fact that the test is consistent and if it is replicated over and over again it is still going to keep producing the same results as it first did.
Reliability is one of the attributes or characteristics of a good test or research. Hence we can conclude that When tests are used as part of the selection process, care must be taken to ensure that the test being used is both valid and reliable. A test is reliable if it consistently creates or measures accurate results time after time.
Reda more on reliability here: brainly.com/question/1265793
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<span>The customs of a bride taking her husband's last name and her family paying for the wedding represents a patriarchal line of authority. In a patriarchal line of authority, the man is considered the head of a family and descendants trace their heritage back through his line.</span>