Correct option is A
Assertion (A) is true because teachers should believe that all children, regardless of their gender, have the potential for logico-mathematical reasoning and possess linguistic skills. This is based on the principle of equal opportunities for all students.
Reason (R) is true as well because gender is indeed a social construct, and it should not determine a child's abilities or potential. Recognizing this fact supports the assertion that teachers should treat all children equally in terms of their cognitive abilities.
Therefore, (R) provides a valid and logical explanation for (A), making option (a) the correct choice.