The student wants to make a generalization about the germination of s… | Verbal SAT Question

While researching a topic, a student has taken the following notes:

Katrin Heer, Larissa Albrecht, and Elisabeth K.V. Kalko published a study in 2010.
In it, the researchers found that ingestion by bats had a neutral effect on the germination of Ficus nymphaeifolia plant seeds.
Mikaela Marques Pulzatto and M.S. Dainez Filho published a study in 2017.
In it, the researchers found that ingestion by bats had a negative effect on the germination of Ficus luschnathiana plant seeds.
Reinaldo Chaves Teixeira, C. Corrêa, and E. Fischer published a study in 2009.
In it, the researchers found that ingestion by bats had a positive effect on the germination of Ficus pertusa plant seeds.

The student wants to make a generalization about the germination of seeds ingested by bats. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Bat ingestion has consistently been found to have a positive effect on seed germination.

As was found in the 2010 study, ingestion by bats has a positive effect on the germination of plant seeds.

Over the years, researchers have studied the effect that seed germination has had on ingestion by bats.

Seed ingestion by bats can have varying effects on seed germination.