You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

[Q]: Paragraph: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react.
Question: DJ has a solution that he adds particles to. The solution is now a _____ concentration.
Choices: A)higher
B)lower
[A]: higher

[Q]: Paragraph: A: The more carbon atoms there are, the greater the number of possible arrangements of carbon atoms.
Question: If Mona is manipulating carbon atoms in her science lab and she increases the number of carbon atoms she has to work with, what happens to the number of possible arrangements the carbon atoms can take?
Choices: A)increase
B)decrease
[A]: increase

[Q]: Paragraph: The more energy the particles in matter have, the faster and more strongly they vibrate.
Question: Compared to a block of ice , would the water molecules in a kettle of boiling water move
Choices: A)faster?
B)slower
[A]:
faster?