Which question can scientifically investigate animal behaviour?

Correct answer: At what time of day do squirrels search for food most often?

The direct answer is B: at what time of day do squirrels search for food most often? A scientific question about animal behaviour must refer to an observable and recordable action under a defined condition. Option B gives an animal, a behaviour—searching for food—and a condition to record—the time of day. An investigator could observe squirrels at regular times, count their food-searching activity, record the data, and compare the counts. Option A is wrong because “cutest” is a personal opinion and cannot be measured by one objective rule. Option B is correct because it can be tested using repeated observations. Option C is wrong because “lucky” is a belief, not a directly measurable behaviour. Option D is wrong because “best friend” is subjective and does not specify observable evidence. Scientific questions can study patterns, frequency, time, and conditions, but they should avoid unsupported personal judgments. Memory cue: good behaviour questions ask what an animal does, when, where, or how often.