We mean that a teacher should teach according to the ability of the child (option C) when we say "A teacher has to be adjusted to fit the mind of each boy and girl he teaches."
Teaching according to the child's ability
Each individual is different, and that is a well-know fact. However, educational systems in several countries have often been criticized for trying to teach all children the same way when, in fact, different children have different abilities and needs.
The sentence we are analyzing here refers to the need for teachers to teach children according to their different abilities. That way, each child can have their needs met and learn properly.
With the information above in mind, we can choose option C as the correct answer.
Learn more about children's abilities here:
https://brainly.com/question/21793593
