Which of the following is NOT mentioned as a benefit of the Montessori method?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.
Most educational specialists believe that early childhood education should provide children with an awareness of their own abilities and the self-confidence in those they have. One of the approaches recognized by many experts as promoting these qualities is the Montessori method, first practiced by an Italian called Maria Montessori in the early 1900s. However, Nancy McCormick Rambusch is the one credited for popularizing the method in the US, where today there are over 400 Montessori schools.
The method helps children learn for themselves by providing them with instructional materials and tasks that facilitate discovery and manipulation. Through such exploration, children develop their senses and learn how to do everyday tasks without adult assistance. Other benefits include improvement in language skills, and acquaintance with elements of science, music and art.