Agricultural products that are produced extremely long distances from the US can be sold in American markets today due to . A.
little demand for fruit and produce existing year-round
B.
speeds of transportation being decreased
C.
refrigeration and preservation techniques being improved
D.
fewer Americans being engaged in farming

C. refrigeration and preservation techniques being improved

Explanation:

Preservation refers to a process that preserves food for a longer period without spoiling. Most common preservation methods are freezing, sugaring, drying, salting, lactic acid fermentation, smoking, acidification, vinegar preservation, sealing, heat treatment, irradiation, use of preservatives and pasteurization.

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the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.