Suppose the writer were to eliminate Paragraph 4. This omission would cause the essay as a whole to lose primarily:

Paragraph 4

Today, children are taught with the Montessori Method in schools both public and private/4 in the United States and many countries around the world. With increasing pressure on schools to provide quality education to a growing population, Montessori’s visionary ideas of teaching self-reliance and love of learning continue to gain popularity. 

F. NO CHANGE
G. Is observing
H. Observes
J. Can observe