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:

R. Oleksy, L. Giuggioli, and T.J. McKetterick published a study in 2017.
In it, the researchers found that ingestion by bats had a positive effect on the germination of Ficus grevei plant seeds.
Jorge E. López and C. Vaughan published a study in 2004.
In it, the researchers found that ingestion by bats had a neutral effect on the germination of Senna fruticosa plant seeds.
J.M. Palmeirim, D.L. Gorchoy, and S. Stoleson published a study in 1989.
In it, the researchers found that ingestion by bats had a negative effect on the germination of Piper friedrichsthalii 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?

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

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

As was found in the 2017 study, ingestion by bats has a negative effect on the germination of plant seeds.

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