Respuesta :
the answer is a because a fill in the blank is always just one word
The answer to this question is that: In fill in the blanks, there must be one keyword rather than a full sentence.
What should be filled in fill in the blanks?
A Fill in the Blank inquiry comprises of an expression, sentence, or section with a clear space where an understudy gives the missing word or words.
In most cases, it should be filled with one keyword.
Thus, option A is correct.
Find more ifnormation about Keyword here:
brainly.com/question/26355510