The first sentence introduces a habit and states that it's harmless in itself but gaining prevalence. The second sentence speaks of a different idea of how the habit modifies our perception, this does not focus on it being harmless, nor does it contradict it. The key is 'modifies and shapes our perception' shows that the action or habit is active in shaping the way the person thinks and acts. Option A implies that the action is now having bad consequences which is not implied, Options B and C do not connect the two ideas correctly, and D best states the connection between the two ideas. **Core Point:** Analyzing the logical relationship between clauses and sentences, identifying cause and effect/logical consequences. **Solution:** The relationship is not causal, rather the second sentence elaborates the nature of the habit discussed in the first sentence. **Option Analysis:** * **A:** Incorrect. The second sentence does not indicate a negative consequence; the impact is neutral, merely a description. * **B:** Incorrect. The second sentence doesn't illustrate the harmless aspect, it details the habit's action. * **C:** Incorrect. There's no contradiction; the habit can be harmless yet still modify perception. * **D:** Correct. The second sentence provides a general insight into how the habit operates, unrelated to the claim of harmlessness. **Common Error:** Misinterpreting ‘modify and shapes’ as negative consequences or confusing the relationship between harmless and general mechanism.