The map of crop hearths indicates that (a coconuts, pigeonpeas, cowpeas, and coffee were first domesticated in East Asia. b. rice, soybeans, and walnuts were first domesticated in East Asia. c. maize, potatoes, squash, and peppers were first domesticated in East Asia. d. mango, taro, and coconuts were first domesticated in East Asia. e. yams, sorghum, and cowpeas were first domesticated in East Asia.

b. rice, soybeans, and walnuts were first domesticated in East Asia.

Explanation:

These are some of the crops that were first domesticated in East Asia. East Asia is a subregion of the Asian continent, which consists of countries such as China, Hong Kong, Macao, Mongolia, North Korea, South Korea, Japan and Taiwan. Two of these crops (rice and soybeans) continue to be a staple in the region, while all of these have become common all over the world.