Nhận biết (M1)

While researching a topic, a student has taken the following notes:

• • A 2022 study analyzed geotagged social media posts to assess the effect of parks on happiness in 25 US cities.

• • The happiness benefit of a city’s parks was the numeric difference between the calculated happiness scores of posts made in parks and posts made elsewhere.

• • A benefit above 0 indicates a positive effect.

• • The park happiness benefit in San Francisco, California, was greater than 0.10.

• • The park happiness benefit in Washington, DC, was greater than 0 but less than 0.10.

• • The average happiness benefit of parks across all cities was 0.10.

The student wants to make a generalization based on the study’s findings. Which choice most effectively uses relevant information from the notes to accomplish this goal?

• A.

  Geotagged social media posts were analyzed for expressed happiness in both San Francisco and Washington.

• B.

  Though it can vary from city to city, the overall effect of parks on happiness is a positive one.

• C.

  San Francisco’s parks had a positive effect on happiness, but this was not true of Washington’s parks, which had a below-average effect.

• D.

  By comparing the happiness scores of posts made in parks and posts made elsewhere, the study determined the effect of parks on happiness.