Although the bite of diamond-backed adders are rarely fatal, they cause chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to its poison.

A. diamond-backed adders are rarely fatal, they cause chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to its

B. diamond-backed adders are rarely fatal, they cause chronic flesh wounds, and pose the greatest danger to the infant and elderly, who are particularly vulnerable to their

C. the diamond-backed adder is rarely fatal, it causes chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to their

D. the diamond-backed adder is rarely fatal, it causes chronic flesh wounds, and poses the greatest danger to infants and the elderly, who are particularly vulnerable to its

E. the diamond-backed adder is rarely fatal, they cause chronic flesh wounds, and they have posed the greatest danger to infants and the elderly, who are particularly vulnerable to their


OA D

Source: Princeton Review