Question

which of these factors may affect a persons blood alcohol concentration?
gender
race
blood type
age

Explanation:

To determine which factor affects blood alcohol concentration (BAC), we analyze each option:

• Gender: Biological differences (e.g., body composition, enzyme activity) between genders impact alcohol metabolism, so gender affects BAC.
• Race: No consistent, direct evidence that race (as a social construct) inherently affects BAC; biological factors (e.g., genetics) within groups are not tied to race broadly.
• Blood type: Blood type (A, B, AB, O) does not influence alcohol absorption or metabolism.
• Age: While age can correlate with health/metabolism, the primary age-related factor (legal drinking age aside) is less about age itself and more about physiological changes (e.g., liver function) over time. However, among the options, gender is the most well-established factor affecting BAC due to differences in body water, fat composition, and enzyme levels (e.g., women typically have less body water, leading to higher BAC for the same alcohol intake).

Answer:

gender (the option "gender")