Continuing with the question above… assume that gretchen analyzes the situation further. typically, glen has been allowed to bring an elmo doll into the bathroom with him when he uses the toilet. (earlier, elmo was used as a reinforcer for using the toilet.) glen sits elmo on a little potty chair in the bathroom while he uses the toilet. gretchen notices that the entire time glen is in the bathroom, he looks at elmo, talks to him, and sings sesame street songs. how should gretchen use this information?

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

b is the correct answer