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Verbal·Information and Ideas·Central Ideas and Details
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Thermal technologies have been used in the food industry for over 100 years, providing a way of preserving food in large batches. Recent advancements in microwave heating were made through research in Mexico on the preservation of mamey sapote fruits. Microwave heating is generally considered an improvement over more conventional thermal preservation methods: whereas conventional methods transfer energy from the surface of a food to its interior, microwave heating uses electromagnetic waves to generate heat within the food itself.
Which choice best states the main idea of the text?
A
Transferring energy from a food’s surface to its interior may represent an improvement over conventional thermal preservation methods.
B
Microwave heating is a thermal preservation technology with concrete advantages over other methods.
C
There are possible flaws in microwave heating technologies that have not yet been well researched.
D
Much of the research into microwave heating has been conducted in Mexico.