There are various factors affecting life expectancy in the United States, where Sex is not a factor for affecting this. Thus, option A is correct.
Statistically the term life expectancy means an average period of time that a person may expect to live.
It is the most common hypothetical measure.
This measure may differs by sex, age, race, and geographic location. So life expectancy is mostly determined for specific categories, rather than for the population.
Various factors affect life expectancy, where two crucial components are the birth time of an individual and his gender.
Other factors include person's race, personal health, medical history of his family members, life-style choices.
Hence, sex is not a factor for affecting Life expectancy.
Thus, option A is correct.
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