Final answer:
Triver's Theory explains why female primates are "choosy" in mate selection because females have more at stake in reproduction. Females choose mates that can provide resources and good genes for their offspring.
Step-by-step explanation:
Triver's Theory explains why female primates are "choosy" when selecting mates. According to the theory, females are more selective than males in choosing mates because they have more at stake in reproduction. Males can produce many offspring with little investment, while females have limited reproductive opportunities and need to ensure their offspring's survival. Females choose mates that can provide them with resources, protection, and good genes for their offspring.