5вопросов на глагол would(would like)

the two major stages of the investigation process are the preliminary investigation and the follow-up investigation.

1. are the two major stages of the investigation process the preliminary investigation and the follow-up investigation?

2. what are process the preliminary investigation and the follow-up investigation?

3. what are the two major stages of the investigation process?

4. are the two or three major stages of the investigation process the preliminary investigation and the follow-up investigation?

      are the two major stages or branches of the investigation process the preliminary investigation and the follow-up investigation?

      are the two major stages of the investigation process or process of training the preliminary investigation and the follow-up investigation?

5.the two major stages of the investigation process the preliminary investigation and the follow-up investigation, aren't they?