Answer:
Supporting evidence, A claim stated as a topic sentence, A concluding statement.
Explanation:
I believe this is correct. Remember to do a counterclaim as that is very important.
Are you asking how to punctuate the sentence? If so, then....
The squirrel reached for the bird feeder, for he saw an abundance of sunflower seeds.
A comma is needed before the coordinating conjunction 'for' that separates the two independent clauses.