He nebular hypothesis suggests that . A. the moon is derived from a protoplanet B. all bodies in the solar system formed from an enormous gas cloud C. galaxies such as the Milky Way form independent of one another D. Earth's moon is an asteroid captured by the Earth's gravity E. the Earth was formed by a cosmic explosion, a "big bang"

B. all bodies in the solar system formed from an enormous gas cloud

Explanation:

The nebular hypothesis -

This hypothesis was given by Forest Ray Moulton and Thomas Chrowder Chamberlin , in the year 1900 .

According to this theory ,  

The planets of the solar system are specifically composed of huge gas cloud .

Where the largest star sun is composed of the hydrogen and helium gases .

This hypothesis is widely accepted by all , and modification are done from time to time , which new discoveries .

Hence , from the question ,

The correct answer is B.