Question

Read this paragraph from the National Oceanic and Atmospheric Administration, a federal agency focused on the condition of our oceans and atmosphere. What logical conclusion can you draw from details in this passage? A significant increase or decrease in the Sun's energy output would cause Earth to warm or cool. Satellite measurements taken over the past 30 years show that the Sun's energy output has changed only slightly and in both directions. These changes in the Sun's energy are thought to be too small to be the cause of the recent warming observed on Earth.Every 30 years, the sun’s output changes and causes Earth to warm up.
Earth’s recent warming must be due to something other than changes in the energy output of the Sun.


We cannot accurately measure the amount of energy the sun puts out.


The warming of Earth’s climate is clearly the result of a change in the Sun’s output.

Answer 1

The best answer is: 
B) Earth’s recent warming must be due to something other than changes in the energy output of the Sun.

The paragraph indicates that, although changes in the sun's energy output does affect the temperature on Earth, the changes have been slight and, over the last 30 years in which the Earth has heated up significantly, the sun's energy output has varied only slightly, and has gone in both directions. The implication is that the change in the Earth's temperature must be due to something else. 

Answer 2

Answer: Pretty sure it's B, but not really sure.