In a contest over territory, two male deer confront each other with antlers lowered and engage in butting heads until one of the two gets tired and wanders off into the forest. This sort of behavior can most accurately be thought of as
A)non-competitive
B)predatory
C)cooperative
D)Selfish cooperation

I researched and researched for the answer but no-one seems to know. Please help :D

In a contest over territory, two male deer confront each other with antlers lowered and engage in butting heads until one of the two gets tired and wanders off into the forest. This sort of behavior can most accurately be thought of as
A)non-competitive
B)predatory
C)cooperative
D)Selfish cooperation

I researched and researched for the answer but no-one seems to know. please help :D
I don't know if there is actually a classification name, I'm not an expert, but I refer to this behavior characteristic as Dominant Male.

The extent to which these traits and mannerisms traverse species and time, I find it difficult to believe no one else knows.

If you are limiting your answer options to this short list, you're missing not just the answer to the question, but you're also missing what is actually happening.

The answer is cooperative