My guess is A. Not a tone of info to go with, but I am a sarcastic god.
Answer:
Microorganisms have adapted to inhabit almost every corner of the world. They live in the oceans and lakes, where they provide a valuable food source for larger organisms. They live on land where they may the decay of dead organic material, recycling valuable nutrients. ... Many microorganisms cause disease in humans.
All the people planned to go to the library.
The correct answer is Objective