A Runner Is in Training for the Chicago Marathon

question 30

Multiple Choice

A runner is in training for the Chicago Marathon. After his most recent 26 mile run, he notices that his urine was reddish-brown. The next morning, his urine is clear and yellow, but he decided to see his primary care physician. All of the hematology and chemistry results are within the reference range. What is the most likely reason for this scenario?

• A) Initial dark color was caused by dehydration.
• B) This is exercise-induced hemoglobinuria.
• C) Uric acid crystals were precipitated in the initial urine.
• D) There is insufficient information to determine the reason.

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Definitions:

Own-price Elasticity

A measure of how much the quantity demanded of a good responds to a change in its own price, often used to understand consumer sensitivity to price changes.

Quantity Demanded

The amount of a good or service that consumers are willing and able to purchase at a particular price.

Rice

A staple food grain consumed worldwide, known for its versatility and ability in serving as a primary source of energy.

Normal Goods

For normal goods, demand increases as income increases.