Probiotics: define probiotics.compare and contrast the four probiotics.how are they alike?how are they different?

 Probiotics.

Write a 2- to 3-page paper in which you:

Define probiotics.
Compare and contrast the four probiotics. How are they alike? How are they different?
In your opinion, which of the four is most “valuable” and which is the least? Explain your reasoning.
Your paper must be 2–3 pages in length. Include evidence or information from at least one credible external source and follow APA style for formatting and citation.