Which activity might lead to damage of a microscope and specimen

Here is the correct answer of the given question above about the microscope and specimen. The activity that might lead to the damage of a microscope and the specimen is when using the coarse adjustment to focus the specimen under high power. 

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for

A: rachel carson :