Final answer:
The statement regarding higher mortality rates in female primates carrying fetuses or infants is true. Pregnant or nursing female primates invest more in childcare and are at greater health risks, aligning with their central role in primate social structures.
Step-by-step explanation:
The statement that 'in primates, females carrying fetuses or young infants experience higher morality rates' is likely referring to increased risks or mortality rates, not 'morality' which pertains to the principles of right and wrong behavior. Given this context, in biological terms, the statement is True. Female primates, when pregnant or nursing, do invest more time and resources in caregiving and may encounter greater risks due to the demands of pregnancy, childbirth, and infant care. Moreover, evolutionary biology suggests that female primates play a central role in primate social life with a strong focus on female kinship and solidarity. This often includes prolonged periods of pregnancy or nursing, during which time their health and survival can be more at risk compared to their non-pregnant counterparts. Thus, while the actual mortality rates may vary across species and environments, the basic premise of increased risks during these reproductive stages generally holds true.