This question requires a knowledge of the equilibrium equation as well as a little understanding of the meaning of exponents.

The equilibrium equation is defined as K = product concentrations divided by the reactant concentrations...K = [product]/[reactant]. If K is a large number (one with a positive exponent) then the amount of product will be large compared to the amount of reactant. If K is a small number (one with a negative exponent) then the amount of product will be small compared to the amount of reactant.

Exponents are just a shorthand way of expressing large or small numbers. The number 10³ is really just ten multiplied by itself 3 times...10 x 10 x 10 or 1000. Negative exponents, such as 10^-3, represent numbers that are smaller than 1 and are really just fractions...1/10x10x10 or 1/1000. What all of this means is that when a negative exponent increases in magnitude, it represents a smaller and smaller number...10^-5 is a smaller number than 10^-2.