Answer:
C. The computer's resolution has been set too low
Step-by-step explanation:
When the screen of a system looks distorted and the desktop icons do not appear properly, it's a sign of low screen resolution.
This is often caused by the lack of proper display driver.
To fix this, one need to update the graphic driver. The graphic card is always available on the manufacturer's website for download download of latest drivers.
Also, screen resolution can be changed by performing the following tasks.
1. Goto Control Panel
2. Under Appearance and Personalization, click Adjust screen resolution.
3. Click the drop-down list next to Resolution,
4. Move the slider to the resolution you want
5. Click Apply.