The answer is a. kineses.
Kineses is a random movement, in no particular direction, of animals as a response to a stimulus.Talking of roly-poly bugs, they move in no particular direction to find a suitable moist spot, which represents a stimulus to them.
Symbiosis is an interaction between two different species. Mimicry is a resemblance of organisms to surrounding objects for the purpose of protection. Commensalism is interaction between two different species in which one of them has some benefit, and the other one is not affected anyway.
