The Answer should be B. Credentials as going by it's definition and all.
Answer:
Change the 'and' to 'but.'
Change 'a test' to 'any tests'
Explanation:
<u>You wrote:</u> My best subject is Spanish, and I haven't passed a test this month.
<u>After Changing:</u>
My best subject is Spanish, but I haven't passed any tests this month.
If you change it, it sounds more like you are unhappy about your Spanish skills and makes more sense.
Answer:
<u>At the party</u>, we met students who did not go to our school.
Explanation:
The underlined portion