Answer:
(B). Organic molecules
Step-by-step explanation:
In 1953, Miller and Urey performed an experiment, in which they made conditions similar to conditions present during early earth. In their experiment, Urey and Miller studied chemical origin of life and found that organic molecules were spontaneously formed under early earth conditions.
Hence, Michelle and her students would find organic molecules at the end of their experiment as their experiment was similar to experiment of Urey and Miller.
Thus, the correct answer is option (B).