Question

1.3.2 test (cst): science and engineering
question 21 of 25
which question requires the collection of data to answer it?
a. are dolphins cuter than porpoises?
b. should dolphins be trained for military uses?
c. how many hours a day do dolphins sleep?
d. do dolphins make good pets?

Explanation:

• Option A: "Cuter" is a subjective opinion, no data collection needed.
• Option B: This is an ethical/policy question, based on values, not data.
• Option C: To find how many hours dolphins sleep, we need to observe, record (collect data) on their sleep duration.
• Option D: "Good pets" is subjective, depends on personal views, no data collection.

Answer:

C. How many hours a day do dolphins sleep?