A humble request – Please give KUDOS if you like the explanation.
The answer is D.
In Chicago, the coyote population is between 2,000 and 4,000; due to their having high survival rates in urban areas, the coyotes copiously reproduce to maintain a pair bond and thus have much longer life expectancies that increases the population in Cook County.
Let us first dissect the sentence.
; is used to join two independent but related clauses
Due to
This phrase is used to modify the nouns. In other words, due to is used to present the reason for a noun.
Because of
This phrase is used to modify the actions. In other words, because of is used to present the reason for an action.
In this sentence we are giving the reason for an action of the range of population hence Because of is correct usage not due to.
option A and B are out.
(A) due to their having high survival rates in urban areas, the coyotes copiously reproduce to maintain a pair bond and thus have much longer life expectancies that increases
In this sentence we are giving the reason for an action of the range of population hence Because of is correct usage not due to.
(B) due to its having high survival rates in urban areas, the coyote copiously reproduces to maintain pair bonds and thus has much longer life expectancies that increase
In this sentence we are giving the reason for an action of the range of population hence Because of is correct usage not due to.
(C) because it has high survival rates in urban areas, the coyote copiously reproduces to maintain a pair bond and thus has much longer life expectancies that increases
It is used to refer to coyote which is incorrect. Here Coyote is in the plural form
(D) because they have high survival rates in urban areas, the coyotes copiously reproduce to maintain pair bonds and thus have much longer life expectancies that increase
This is the correct choice.
(E) because of having high survival rates in urban areas, the coyotes copiously reproduce to maintain a pair bond and thus have much longer life expectancies that increases
because of having high survival rates in urban areas – This is an incorrect way to refer to Coyotes