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In contrast to the social intelligence hypothesis, the behavioral flexibility hypothesis seeks to explain selection for large brains in monkeys and apes as having been driven in part by which of the following ecological factors?
Reproductive Age
The period in the life of both males and females during which they are capable of reproducing sexually.
Female Sexual Organs
The parts of the female body involved in sexual reproduction and function, including the vagina, uterus, ovaries, and external genitalia.
Missed Menses
The absence of menstrual periods for one or more cycles, which can indicate pregnancy or various health issues.
Nausea/Vomiting
A symptom complex characterized by an urge to vomit and stomach discomfort without actual vomiting.
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