Individuals who have consumed alcohol within 24 hours of exposure to H2S can tolerate __________.

Correct Answer: Option B — smaller than normal concentrations of H2S

Alcohol consumption impairs the body's physiological response to toxic substances. Research indicates that individuals who have consumed alcohol within 24 hours exhibit reduced tolerance to hydrogen sulfide, making them significantly more susceptible to the toxic effects of H2S even at concentrations that would otherwise be considered manageable.