Step 1: Understanding the Question
The question asks to identify a crop that meets two conditions: it must be a 'Rabi' crop (sown in winter) and it must be a 'cereal' (a grain-producing grass).
Step 2: Detailed Explanation
Let's evaluate each option against the two conditions:
(A) Paddy (Rice): This is a cereal, but it is a Kharif crop, not a Rabi crop.
(B) Maize: This is a cereal, but it is primarily a Kharif crop.
(C) Wheat: This is a Rabi crop and it is a major cereal. It fits both conditions.
(D) Gram (Chickpea): This is a Rabi crop, but it is a pulse (legume), not a cereal.
Step 3: Final Answer
Wheat is the only option that is correctly identified as a Rabi cereal crop.