Answer:
The only testable question would be:
D. Are average yearly temperatures in Ecuador greater than in Springdale?
Step-by-step explanation:
For something to be testable, it first needs to be measurable or quantifiable. Average yearly temperatures are measurable. The problem with the other questions is that the questions that were asked cannot be quantified or measured. For example:
Is the climate in Ecuador better than the climate in Springdale?
Do high pressure systems prefer forming in Ecuador compared to in Springdale?
Are thunderstorms in Ecuador as scary as thunderstorms in Springdale?
If you guys take a look at the underlilned words, these are more of subjective measures. It is a description of something that we cannot measure with instruments to give an exact value.