The passage presents both the positive and negative effects of smartphones. On the positive side, it mentions:
- Smartphones have revolutionized communication,
- They offer instant connectivity, and
- Provide access to many apps for various uses, improving access to information.
The passage then transitions to the negative effects using the word “however,” stating that smartphones are associated with:
- Decreased attention spans, and
- Increased screen time, which may negatively affect mental health.
Therefore, Option C is correct because the passage directly identifies increased screen time as a negative effect of smartphone usage.
Let’s rule out the other choices:
- Option A is incorrect because the passage clearly says smartphones decrease attention spans — the opposite of what’s stated.
- Option B is wrong; smartphones actually increase access to information, not limit it.
- Option D is also incorrect, as smartphones enhance connectivity, not reduce it — this is described as a benefit in the passage.