Someone answer this

Answer:
A
Explanation:
This way to approach these questions are to choose the most unbiased and scientific source. You should methodically go through each answer, here was my mindset:
A: "ok ok, a study from a well know and valid source, and its on something related to the question"
B: "what the heck does a bank manager have to do with this???"
C: "these guys must be very very biased, we already know they are pro pet rights"
D: "a blog, that's opinion writing so it is obviously biased"
Therefore I would choose A as the answer because it is the least biased.