Essay · Part 1, compulsory. You're given a topic with three content points; choose two of the three, discuss them in depth, and say which is more important. 220–260 words, formal/neutral register.
Letter / Email · Part 2, one of three options. The register depends on who you are writing to, an editor, an employer, a college, or a friend, so match it to that reader. Usually formal, but not always. 220–260 words.
Proposal · Part 2, one of three options. Written for a manager, colleagues or committee, recommending future action - persuasive and forward-looking, uses headings like a report. 220–260 words, formal register.
Report · Part 2, one of three options. Written to inform a specific reader about a situation and make recommendations, under clear headings. 220–260 words, neutral and impersonal register.
Review · Part 2, one of three options. Written for a magazine or website; describes something, evaluates it critically with both praise and reservation, and recommends it to a specific reader. 220–260 words, confident and engaging register.