Question

fill in the blank with the word that correctly completes the sentence.

1. most people have a great understanding of how to use all of the and tools on their cell phones, but pay little attention to basic phone usage rules.

features
settings
buttons
backgrounds

Explanation:

• "Features" refers to the characteristics or functions of something. In the context of cell phones, it makes sense to talk about using the features (like camera, apps, etc.) along with tools.
• "Settings" are more about configurations (e.g., display settings, sound settings). While people use settings, the parallel with "tools" is not as strong as with "features".
• "Buttons" are physical or virtual controls. But the sentence implies a broader range of aspects (not just controls) that people use on their phones.
• "Backgrounds" are related to the visual appearance (e.g., home screen background). This has no relation to using aspects of a phone in the context of the sentence.

Answer:

features