The change that would correct this sentence is to capitalize it. Option A is correct.
It should be capitalized since it is at the beggining of a quote. And every quotation should begin with a capital letter if the quotation marks the beginning of a sentence. When quotations form complete sentences, they must be capitalized regardless the place where they appear in the main sentence. Capitalization in mid-sentence is common when using quotations.
hello, i have just taken the test. your answer for part A would be ''the bird would rather fly free'' and for part B it would be ''for he must fly back to his perch and cling''. hope this isnt too late :^