Need help fast please I am timed and giving 47 points.
Four groups of students plan scientific investigations to answer four questions for the science fair.

Questions for Science Fair:

1-What kinds of plant life grow naturally in the town parks?

2-Which types of treats do different breeds of dogs like best?

3-Do different types of grass affect how far a ball rolls?

4-How are the chemicals in different vegetables similar?

Which question would most likely be answered with an experimental investigation?

A-1
B-2
C-2
D-4