Question

informational text: text features
an integrated approach
to understand the effects of the thaw scientists are increasingly turning to integrated earth observations from the ground, the air, and space - techniques outlined in the paper. each approach has its advantages and disadvantages.
ground measurements, for example, provide precise monitoring of changes in a localized area, while airborne and space - based measurements can cover vast areas. ground and airborne measurements focus on the specific time they were collected, whereas satellites constantly monitor earth - although they can be limited by things such as cloud cover, the time of day, or the eventual end of a satellite mission.
the hope is that using measurements from a combination of platforms will help scientists create a fuller picture of changes at the poles, where permafrost is thawing the fastest.
according to the text, what type of approach are scientists using?
an integrated approach
a separated approach
a disconnected approach

Explanation:

The text explicitly states "To understand the effects of the thaw scientists are increasingly turning to integrated Earth observations from the ground, the air, and space - techniques outlined in the paper". This clearly indicates that the approach scientists are using is an integrated one.

Answer:

an integrated approach