GMAT SC Question

1. The European shag, a seabird whose susceptibility to parasite infections has been studied by scientists who discovered that more male chicks are infected than females.* **A. *a seabird whose susceptibility to parasite infections has been s…

1. The European shag, a seabird whose susceptibility to parasite infections has been studied by scientists who discovered that more male chicks are infected than females.

A. a seabird whose susceptibility to parasite infections has been studied by scientists who discovered that more male chicks are infected than females.

B. a seabird who is susceptible to parasite infections, has been studied by scientists who discovered that more male than female chicks are infected.

C. a seabird, being susceptible to parasite infections, has been studied by scientists who discovered that more male chicks are infected than females.

D. a seabird who scientists have studied as to their susceptibility to parasite infections, discovered that more male chicks are infected than females.

E. a seabird whose susceptibility to parasite infections are being studied by scientists who had discovered that more male chicks are infected than females.

What is the answer?