Question 20: A. The first solar box cooker was built by Horace de Saussure in 1767, and solar cookers and dryers are now used for cooking an...

Question 20:

A. The first solar box cooker was built by Horace de Saussure in 1767, and solar cookers and dryers are now used for cooking and dehydrating food without causing pollution, though their pasteurization function is still debated

B. Horace de Saussure built the first solar box cooker in 1767, and solar cookers and solar dryers are used for cooking, dehydrating, and pasteurization without fossil fuels or pollution

C. In 1767, it was Horace de Saussure who built the first solar box cooker, and nowadays these cookers and dryers are used for cooking, dehydrating, and pasteurization without relying on fossil fuels

D. Having been first developed by Horace de Saussure in 1767, the solar box cooker paved the way for modern devices that cook, dehydrate, and pasteurize food without depending on fossil fuels