Question

the excerpt from an article published in 2017, discusses a study on mule deer migration in wyoming. migrating mule deer track \green waves\ of spring forage by u.s. geological survey. migratory mule deer in wyoming closely time their movements to track the spring green - up, providing evidence of an underappreciated foraging benefit of migration, according to a study. biologists have long understood that migration corridors are important for enabling animals to move between winter and summer ranges. review the first two paragraphs of the passage, on pages 1 and 2. which inference can be made based on these paragraphs? before the study, scientists believed that the sole purpose of deer migration corridors was movement between locations. before the study, scientists were unaware that the corridors deer traveled contained resources needed for survival. during the research process, scientists discovered that mule deer migrate from low elevations to high elevations in wyoming. during the research process, scientists discovered the locations of deer migration corridors in wyoming.

Explanation:

The text mentions that the study provided evidence of an under - appreciated foraging benefit of migration. This implies that before the study, scientists were unaware that the corridors deer traveled contained resources needed for survival. The other options are not supported by the first two paragraphs.

Answer:

Before the study, scientists were unaware that the corridors deer traveled contained resources needed for survival.