Concept:Groundnut rosette is a viral disease, and its most typical signs are stunted growth with yellow or mottled leaves.
Explanation:The symptoms given in the question are stunted growth and yellow or mottled leaves.
These symptoms are the classic signs of groundnut rosette disease.
Groundnut rosette is caused by a virus and is spread by insect vectors.
Blight mainly causes leaf spots and blighting of foliage.
Tikka disease also results in leaf spots rather than yellow mottling and stunting.
Anthracnose produces dark lesions on leaves and stems.
Therefore, the described symptoms do not match any of these other three diseases.
Answer:C. rosette