I will only revise it, but not edit it.
It may assess that every year 26 million animals in the United States would continuously utilize similarly as a pet. Animals are being used to test scientific developments and commercial products. New medical treatments are tested on animals to verify the toxicity of new medications or the safety of a human-used product. The healthcare and the commercial industries are also turning to the animal experiments for these understandings.
2 is b the knight rode bravely into the woods
The poetic pattern for this work is A-B-A-A-B
B: personal opinions
Because readers can have different opinions and it makes an essay more biased.