While teaching multiplication table for ‘4’ a teacher has used the multiplication table for ‘2’ in the following way :
4 times 2 is double of 2 times 2.
4 times 3 is double of 2 times 3 and so on.
The objective of the teachers to :

Correct option is D

The teacher is using patterns and relationships to develop the new concept of the multiplication table for '4' using the students' previous knowledge of the multiplication table for '2'. By explaining that 4 times a number is double of 2 times that number, the teacher is helping the students to see a pattern that they can use to memorize the multiplication table for '4'. This is an effective way to teach multiplication tables because it helps students to develop a deeper understanding of the concept of multiplication.