Answer:
Pretty confident its A. (if you get it wrong the first time then its D)
C and B I can say are definitely not right.
The answer is A or C because they wouldn’t just fly north because of predators and water availability so the Robins can either sense the tilt or can tell by the day hours.
Making an agenda to understand what you want to acheive.
Always size up the situation before you do anything.
The answer to this question is internet.
These days, the majority of scientific researchs and journals are fully available on the internet.
Not only that, the range of the researches have become really specific so we could easiy target the source of information that cater to our interest.
