The issue of whether human activities cause global climate change is a controversial topic. Which limitation to climate research could most likely be overcome through scientific design?

AConditions that create climate are extremely complex.
BData from a wide range of time periods must be analyzed.
CConducting experiments on a global scale is extremely expensive.
DAltering climates has ethical considerations because of the potential for harm.

Verified Answer :

The issue of whether human activities cause global climate change is acontroversial topic. Which limitation to climate research could most likely

B
The other problems are not as easily solved; whereas, data collection over long periods of time is possible and was already done in the past, eg temperature and weather patterns. Therefore, this is the easiest limitation to overcome.