TASK DEFINITION: In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
PROBLEM: Question: If Mona is creating a reaction using solid reactants and she decreases the surface area of those reactants, what happens to the reaction rate? 
 Answer: decreases

SOLUTION: Therefore, increasing the surface area of solid reactants increases the reaction rate.

PROBLEM: Question: Dwayne Johnson is weaker than Kevin Hart because he exercises less and therefore his muscles have grown 
 Answer: smaller.

SOLUTION: Exercising muscles increases their size, and bigger muscles have greater strength.

PROBLEM: Question: A flu vaccine was administered to residents in a large city and the vaccine was ineffective in lowering the risk of flu among the residents. This means that the higher risk of disease resulted in a 
 Answer: higher death rate

SOLUTION:
With better food and less chance of disease, the death rate fell.