The word which best completes the sentence is:
Based on the given question, there is a sentence which shows a dialogue between two speakers where Bill, the first speaker asks Liz a question.
Bill asks Liz why she bought a lot of tomatoes and Liz told him that she did that because she was going to make spaghetti sauce.
This shows that the action which Liz wants to perform is a future tense , hence the "I am going to..."
Therefore, the correct answer is option A
Read more about tenses here:
https://brainly.com/question/8916632
