<span>The role that the mosquito played in the chain of transmission is C. a vector. Vector refers to the mode of transportation, which is, in this case, the mosquito. Portal of entry is Jane's skin. Susceptible host is the same thing as the reservoir, which means that is Jane - she is the one who is going to host this infection which mosquito transferred to her. Thus, the only correct answer is C. vector.</span><span />
