Answer:
The correct answer is - decrease the area of the field of view.
Explanation:
In the microscope, if you increase the magnification power of the objective lens it will result in a decrease in the field of the view. The magnification power is inversely proportional to the field of view which means if decrease the magnification it will lead to an increase in the field of view and vice versa.
The specimen looks larger with a higher magnification as it results in a smaller part of the specimen is exposed or spread out to fill the field of the view.
Thus, the correct answer is option - decreases the area of the field of view.
