Which of the following is the best method of teaching?
- To impart knowledge to students
- To ask students to self-learn from books.
- To start a discussion and encourage students to participate in it.
- To ask students to go to the library.
(Option $1 [39737]) 1$
(Option $2[39738]) 2$
(Option $3 [39739]) 3$
(Option $4[39740]) 4$