Concept:National unity means people of different ethnic, religious and political groups living together as one nation.
Solution:Ghana has many religions (Christianity, Islam, traditional religion). Religious tolerance, that is, respecting other people's faith and living peacefully with them, prevents religious conflict and keeps the nation united.
Freedom of worship (B) is a right that allows each person to practise his religion; without tolerance it does not unite people. Use of made-in-Ghana goods (C) supports local industry and jobs, not unity.
Ethnic-based education (A) keeps people apart in their own groups, so it does not promote unity.
Key point: The paper's option A read 'formal education', which also promotes national unity (pupils of all ethnic groups learn together a common curriculum), so the question had two correct answers. Option A has been changed so that only religious tolerance is correct.
Answer:Option D (religious tolerance)