Question

which of the following is a risk for someone who chooses to smoke tobacco?
decreased aerobic capacity and overall physical performance
increased risk of sexually transmitted infections and pregnancy
impaired ability to think clearly and make smart decisions
greater chance of contracting sexually transmitted infections

Explanation:

• Smoking damages the respiratory system, reducing lung function. This leads to decreased aerobic capacity (ability to take in and use oxygen during exercise) and worsens overall physical performance.
• The other options are incorrect: Smoking does not directly increase the risk of sexually transmitted infections (STIs) or pregnancy (STI and pregnancy risks are related to sexual behavior, not smoking). Impaired thinking/decision - making is more associated with substances like alcohol or drugs, not typical short - term smoking effects. And smoking has no direct link to contracting STIs.

Answer:

A. Decreased aerobic capacity and overall physical performance