Answer:
The author has a negative view of "nougat."
Explanation: After explaining what nougat is, the author then talks about how candy makers add a number of ingredients that are not healthy. Clearly he or she does not like the use of vegetable fat, and extra amounts of corn syrup and sucrose-thus has a negative view of nougat.
The answer which is an example of a theme with a dual nature is D. people who work hard learn values but may not prosper.
The other sentences are pretty linear and expected - a person works hard and is successful in life. D is somewhat different, which is why it has two natures, or a dual nature.
Answer and Explanation:
He had a letter of introduction from his sister.