|Question 8Verbal

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Text
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 ohmic heating were made through research in Chile on the preservation of strawberries. Ohmic heating is generally considered to be an improvement over more conventional thermal methods: whereas conventional methods transfer energy from the surface of a food to its interior, ohmic heating passes electric current through food products to generate heat within the food itself.
Which choice best states the main purpose of the text?
It provides an overview of the research into ohmic heating both globally and in a specific country.
A
It introduces ohmic heating as a food preservation technology and identifies one of its advantages.
B
It explains why conventional heating methods are popular in commercial applications and proposes a shift away from these methods.
C
It suggests that there are possible flaws in ohmic heating technologies that have not yet been well researched.
D