a critical reasoning question. Need your help
THANK YOU PREVIOUSLY.
THIS IS A CRITICAL REASONING OF GMAT
THE QUESTION IS IN THE FOLLOWING:
Which of the following most logically completes the passage?
Mastitis is an infection of the udder in cows that, although not dangerous, cause them to give poor-quality milk. Most cases of mastitis are caused by the bacterium Staphylococcus aureus, against which antibiotics are ineffective. However, a related bacterium, Staphylococcus simulans, quickly clears up even severe infections of S. aureus simply by displacing the bacteria. S. simulans is nevertheless unlikely to become the preferred treatment for cases of mastitis, since_________.
a certain dangerous bacteria that normally can't take hole can do so in the presence of S. simulans
b the current resistance of S. aureus to antibiotics derives in part from a past pattern of overuse of those antibiotics
c the milk from cows infected with S. aureus is generally not of such poor quality as to be entirely unusable
d careful farming practive can reduce the incidence of mastitis to a minimum
e the only sympom of mild cases of mastitis is the deterioration in the quality of the milk produced
the answer is a . but i don't know what's it talk about of the answer a. According to my knowledge, in one sentence can not exist two verb, but this sentice have two verbs. i can't distinguish the logical relations. do you know?
