B. Scientists believe that ... 1) stripes do not protect zebras from lions. 2) stripes can protect zebras from insects. 3) zebras have white skin.

1. The text mentions that scientists believe their stripes protect zebras from enemies and that some scientists think the stripes keep insects away.

2. This directly supports the idea that stripes can protect zebras from insects.

3. The text also states that most scientists think zebras are black with white stripes, not that they have white skin.