The correct answer is: D. Anand
Anand is the largest rice-growing district in Gujarat. It is located in the central part of the state and is known for its fertile soil and abundant water resources. The district has a long history of rice cultivation and is home to several rice research institutes. In 2019, Anand produced over 2 million tonnes of rice, making it the largest rice-producing district in Gujarat.
Valsad is a district in the south of Gujarat. It is a coastal district and is known for its beaches and tourism. The district is not a major rice-producing area.
Jamnagar is a district in the northwest of Gujarat. It is a major industrial district and is home to several oil refineries. The district is not a major rice-producing area.
Amreli is a district in the north of Gujarat. It is a hilly district and is known for its forests and wildlife. The district is not a major rice-producing area.