The correct option is C intraspecific competition
Intraspecific competition is an interaction in population ecology, whereby members of the same species compete for limited resources. This leads to a reduction in fitness for both individuals. By contrast, interspecific competition occurs when members of different species compete for a shared resource.
Protocooperation - It is a positive interaction in which both the species will benefit but they can live equally well without this association.
Predation - is a biological interaction where an organism that is hunting (predator) feeds on another organism (prey).