Dr Janelle Notices That in Some (Although Not All) Cases

question 63

Multiple Choice

 Dr. Janelle notices that in some (although not all) cases of multiple sclerosis (MS) one of the first symptoms is tingling or pain. Which of the following statements best explains why this might happen?

• A) The fibers of the axons are reduced in diameter, so the information can't travel fast enough.
• B) Neural signaling may not work properly as a result of nervous system demyelination.
• C) The fibers of the axons are enlarged, slowing neural transmission.
• D) Potassium is not cleared from the synapse efficiently, leading to fewer action potentials.

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Definitions:

Contribution Margin

The amount of revenue remaining after deducting variable costs, used to cover fixed costs and generate profit.

Sales Mix

The relative proportion of different products or services sold by a company, significantly influencing its overall profitability.

Existing Sales

The volume or amount of sales that a company has already achieved within a specific period, prior to any new sales efforts or campaigns.

Contribution Margin

The amount remaining from sales revenue after variable costs have been deducted, indicating the portion of sales available to cover fixed costs and generate profit.