Negative keywords can help advertisers better target their ads by:

• reducing their campaign’s daily budget recommendations
• raising the average position of their ads
• reducing the number of irrelevant clicks
• increasing the number of relevant Display Network placements

Correct answer is:

• D) reducing the number of irrelevant clicks

Explanation: Negative keywords can help advertisers refine the targeting of their ads byreducing the number of irrelevant clicks.

Read more here: https://support.google.com/google-ads/answer/2453972