Question

Choose the option that best fills in the blank:
You'd better drink lots of water when you go trekking _______ that you don't get dehydrated.

• A. after
• B. and
• C. for
• D. so

Answer 1

The correct option is D so

'So that' is used to talk about a purpose. In the given sentence, the purpose is to not get dehydrated. 'So that' is used to explain the purpose. Options A, B and C are grammatically wrong. Thus, option D is the correct answer.