We should not allow mosquitoes to bread in our surroundings because they

Options

A. multiply very fast and cause pollution
B. are vectors for many diseases
C. bite and cause skin diseases
D. are not important insects

Answer

B

Explanation

Many animals which live with us carry diseases. These animals transfers infecting agents from sick person to another potential host (healthy person) and act as vectors. Mosquitoes are known to cause many diseases.