Based on Research Conducted with Nonhuman Animals,it Is Reasonable to Conclude

Based on research conducted with nonhuman animals,it is reasonable to conclude that aggression

A) may be instinctive-very few species are able to suppress aggressive urges.
B) is instinctive in all species except humans.
C) is not inevitable, but instead an optional strategy.
D) is not instinctive, but rather solely a result of learned processes.
E) is only instinctive in "lower" animals.