Methods for Preserving the Genetic Diversity of Food Include

Methods for preserving the genetic diversity of food include:

A) maintaining genetic samples of the world's most important food crops in a global seed vault.
B) eating a variety of fruits and vegetables that have been imported from all over the world.
C) using genetic engineering to create new resistant plant species that replace old ones.
D) eating higher on the food chain to protect vegetables that have been grown.