Which of the following is used for both harvesting and threshing?

The agricultural equipment used for both harvesting and threshing is a combined harvester. A combine harvester is a machine that combines several harvesting operations into a single process. It can harvest, thresh, and clean crops such as wheat, corn, soybeans, and rice in a single operation. The combine harvester uses a cutting mechanism to harvest the crops and then separates the grain from the straw and chaff using a threshing mechanism. The grain is then cleaned and collected in a hopper for further processing, while the straw and chaff are discharged from the machine.

A winnower is a device used for separating grain from the chaff or other debris after threshing. It is often used after harvesting and threshing, but it is not used for both operations.

A harvester is a machine used for harvesting crops such as wheat, corn, soybeans, and rice. It cuts the crop and leaves it in windrows for drying or further processing. However, it does not perform threshing operations.

A sickle is a hand-held cutting tool used for harvesting crops such as wheat, barley, and oats. It is used for cutting the stems of the crops close to the ground, but it does not perform any threshing or cleaning operations.