B
Below is a question with multiple-choice answers. Choose the correct option based on your reasoning.

### Question:
A scientist is searching for areas where new solar systems might form. What feature is the scientist looking for?

### Choices:
A. a star similar to our Sun
B. a cloud of dust and gas
C. an oxygen-rich atmosphere
D. a gravitational acceleration of 9.8 m/sec2

### Answer:
