Answer:
e.
Explanation:
The correct answer would be caring for a subadult by someone other than the mother.
Cooperation or cooperative actions are those actions that are carried out by two or more individuals in order to achieve a common goal or goals.
Warning calls are carried out by one or two individuals in order to warn those around of a particular danger. Nut cracking among primates requires the collective efforts of many individuals. Grooming is a social behavior among primates that requires the cleaning up and maintenance of boy hygiene of an individual by another individual. Group hunting involves the collective efforts of a group of primates.
The only option that does not require cooperation is caring for a subadult by someone other than the mother.
The correct option is e.