It is because when it is placed in a freezer, the cold slows down the chemical reaction that makes it glow. Basically, you freeze the chemicals inside the glow stick.
The correct answer to this open question is the following.
You did not provide any reference to answer this question. We do not know the text, the excerpt, the name of the book or article, neither the name of the author. Without that information is difficult to know what you are talking about,
However, trying to help you and doing some deep research, we can comment on the following.
You are referring to the lecture "Barrington Irving; Pilot and Educator," an article from National Geographic.
I agree with the author because the life of Irving is an example of perseverance and determination. Irving is a pilot. But his childhood was a tough one. He was raised in the tough neighborhoods of downtown Miami, Florida.
At 28, he had graduated with honors and built his own plane prototype.
So he is a true example of overcoming obstacles in life and has the authority to give recommendations to students. His main message: "if you are determined and have clear goals, nothing can stop you."
The correct answer should be Leonardo did not intend for his inventions to do harm.
I saw on the Internet that B and D are incorrect, so we have to choose between A and C. A is also incorrect because Leonardo had much greater plans for his inventions that simply to investigate the properties of snow. This leaves us with C as the correct answer - he wanted to advance science, rather than create a bad invention.
Answer:
A. When Diego hesitates to confront Ian, it suggests that he still fears his old enemy.
Explanation:
The interpretation is given when the speaker claims that he ( Diego ) has some fears and these are caused by an old friend of his, Ian. This interpretation is reinforced by the verb " suggests ".The evidence is present when the speaker describes Diego's attitude towards Ian: he is not determined to face Ian .
