Answer:
(B). Increased mortality of rabbit species II
Step-by-step explanation:
Bats feed on mosquito species that carry pathogenic protozoans, which are fatal for mammals. If all bats are removed from that meadow, there will be no predators for mosquito species and they will grow in a large number and infect mammals through biting.
As rabbit species I is immune for the protozoan, transmitted by mosquito, they will fight against protozoan infection and will survive. On the other hand, species II has no immunity against the protozoan, so, they will get infected and die due to the protozoan-infection.
Thus, the correct answer is option (B).