According to darwin which of the following creatures would be most likely to survive

Assuming that this is referring to the same list of options that was posted before with this question, the most likely to survive would be any create that is able to blend in (assimilate) into their environment, which leads to a lack of detection relative to others. 

Ifound this on google “the existence of agglomeration economies is central to the explanation of how cities increase in size and population, which places the phenomenon on a larger scale. the concentration of economic activity in cities is one reason for their development and growth.” i hope this you for what your looking for.