Select the most appropriate option to fill in the blank and make a grammatically correct sentence.

I was annoyed because the decision ________ without my knowledge.

was made

The most appropriate option to fill in the blank is was made.

The sentence is in the past tense, and the verb "make" needs a past tense form. The past tense form of "make" is "made."

The other options are not as appropriate.

• Were made is the past plural form of the verb "make." This does not make sense in the context of the sentence, because the decision was made by one person, not by multiple people.
• Was make is grammatically incorrect. The verb "make" needs to be in the past tense form.
• Had made is grammatically correct, but it does not make sense in the context of the sentence. The decision was made in the past, not before the past.