What is the mist likely effect to the reaction is there is an increase in pressure on this reaction

B. The reaction rate decreases

Explanation:

Increasing the pressure on a reaction involving reacting gases increases the rate of reaction.  

Changing the pressure on a reaction that involves only solids or liquids has no effect on the rate.

If you increase the pressure of a gas, you squeeze it into a smaller volume

Greater density of molecules increases the number of collisions. When you decrease the pressure, molecules don't hit each other as often and the rate of reaction decreases.  

a) the particles of the chair are strongly held together.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.