The answer is (d) because' In order to serve students best' is a consequence of the main sentence 'school districts need to ask for additional information'
I think its going to be the 2nd option class's. even the you usually put an apostrophe after the s when the noun is plural, I believe class's is a collective noun in this place which take a singular approach with apostrophes
the best answer of work style is extremely flexible working on so many different projects require
Explanation:
professional image consists of personal appearance with regard to clothing ,grooming,manners and etiquette personal behaviour and communication effectiveness