Complete the sentences with the appropriate relative pronouns.

I. The teacher ______ designed the assessment included both grammar and reading comprehension questions.

II. The article ______ we discussed during the seminar presents a critical view of language teaching methods.

III. The school ______ the research was conducted serves students from different social backgrounds.

IV. The reason ______ the students performed better was related to the use of authentic materials.

Choose the alternative that presents the correct sequence.