Rini asked his teacher, “Why are the stems of plants round and not square shaped ?" What should the teacher do ?
A. Teacher should tell students that they will learn about this in higher classes.
B. Teacher should explain students that the reason of round stems is the gravity.
C. Teacher should ask students to think about the reason for the round shape of stem.
D. Teacher should take students for a garden visit and ask to observe the shape of various stems.

Correct option is C

For teaching ‘Why are the stems of plants round and not square shaped’. A teacher should ask students to think about the reason for the round shape of stem as it helps them to think it critically and developing their critical thinking skills.
Teacher should take students for a garden visit and ask to observe the shape of various stems as student learn better by observing and leaning by doing activities.