The answer is B. (an increase in inbreeding) hope this helped !!
The answer you are looking for is C.
Answer:
Body tube (Head): The body tube connects the eyepiece to the objective lenses. Arm: The arm connects the body tube to the base of the microscope. Coarse adjustment: Brings the specimen into general focus. Fine adjustment: Fine tunes the focus and increases the detail of the specimen
Explanation:
C) balance
Explanation: ruler shows length and the other 2 are used for liquids