Plant Breeding Has Been Utilized for Centuries to Improve the Quality

Plant breeding has been utilized for centuries to improve the quality of crop plants. One of the most successful breeding methods uses hybrids, which are produced when

A) highly inbred varieties of plants are mated to each other.
B) distantly related species with beneficial features are mated to each other.
C) one or more genes from one variety of plant is inserted into another variety.
D) farmers provide relatively little care to a crop and allow natural selection to identify the hardiest variety.