31 While researching a topic, a student has taken the following notes: • In a 2020 study, researchers in California investigated how many potential nesting sites female wood ducks visited during the nesting season. • The researchers placed nest boxes throughout the survey area and tagged 138 female wood ducks with radio frequency ID trackers. • These trackers recorded how many nest boxes each duck visited. • 67 ducks (48.5%) visited only one nest box. • 18 ducks (13.0%) visited 10 or more nest boxes. • Younger ducks were more likely to visit multiple nest boxes. The student wants to present the methods used in the 2020 study. Which choice most effectively uses relevant information from the notes to accomplish this goal?
","rationale_html":"Choice C is the best answer. The sentence presents the methods used in the study, noting that researchers tagged 138 female wood ducks with radio frequency ID trackers and recorded the number of nest boxes each duck visited. Choice A is incorrect. While the sentence mentions an aspect of the study’s design (that the researchers recorded the number of nest boxes the wood ducks visited), it primarily focuses on a finding of the study rather than the methods the researchers used. Choice B is incorrect. While the sentence mentions an aspect of the study’s design (that the researchers tracked the number of nest boxes the wood ducks visited), it primarily focuses on a finding of the study rather than the methods the researchers used. Choice D is incorrect. The sentence misrepresents information from the notes. The researchers used radio frequency ID trackers to record the ducks’ visits; they didn’t investigate each site to look for evidence that it had been visited.
","correct_answer":["C"],"has_media":false,"has_mathml":false,"has_table":false,"source_created_at":null,"source_updated_at":null,"options":[{"label":"A","content_html":"By recording how many nest boxes each duck visited, the researchers discovered that only a relatively small percentage (13.0%) of the ducks visited 10 or more nest boxes.
","ord":0},{"label":"B","content_html":"After tracking how many nest boxes the 138 wood ducks visited, the researchers found that the younger ducks tended to visit more nest boxes than the older ducks.
","ord":1},{"label":"C","content_html":"The researchers tagged 138 female wood ducks with radio frequency ID trackers and recorded how many nest boxes each duck visited during the nesting season.
","ord":2},{"label":"D","content_html":"The researchers investigated each nesting site for signs that it had been visited by the female wood ducks.
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