Concept:Nursery practices are used for crops that are first raised as seedlings before transplanting.Explanation:Among the options, rice is the cereal crop most commonly raised in a nursery. Rice seedlings are grown in a nursery bed and later transplanted into paddy fields. Maize, millet, and guinea corn are usually sown directly into the field. Thus, rice requires nursery practices more than the others.Answer:Rice (Option B).