In the second paragraph "a 2009 study…"is used by the critics to______.A．To indicate the a

In the second paragraph "a 2009 study…"is used by the critics to______.

A．To indicate the author is against the policy.

B．To emphasize there is no need to ban the students with bad grades to take part in extracurricular activities.

C．To suggest girls can benefit from extracurricular activities.

D．To prove grades have nothing to do with extracurricular activities.