Question

The women's health initiative is an attempt by the National Institutes of Health to correct errors in medical research that results from medications not being tested on women.
a)by the National Institutes of Health
b)in
c)results
d)being tested
e)no error

Answer 1

Here, the correct answer is (c), because the verb 'results' belongs to the subject 'errors'. Because 'errors' is plural, it would take the 'they' form, and 'results' would not have an s.