Answer:
I believe the answer would be D.
Step-by-step explanation:
I think it would be this because your sience book may or may not talk about the bird and you know for a fact that the blog does and the other choices are silly
D.) an online article by National Geographic about the bird
This is because if you are studying one specific bird, the sciecnce textbook will not give you as many reliable details as national geographic will.
4.7m questions
6.0m answers