In which particular area teachers of such schools where inclusive education is…

Concept: Inclusive education places students with a wide range of needs — physical, sensory, intellectual, or specific learning disabilities — in the same general classroom as their peers instead of routing them to separate special schools. Because these needs vary widely and are not always obvious, the foundational skill that inclusive-education teacher training must specially build is a two-part competency: first recognizing which students have specific learning needs, and then adapting instruction to teach them appropriately within that same classroom.

Application: Applying this to the question, the two-part competency of identifying children with special needs and teaching them accordingly is exactly what is offered as the option describing this competency, which is why it names the area teachers of inclusive schools must specially be trained in.

Cross-check: Contrasting the remaining options confirms this by elimination:

• Teaching through the lecture method is a general, one-way instructional technique used across ordinary classrooms of every kind; it carries no built-in mechanism for recognizing individual learners' differing needs.

• Action-oriented teaching is a general activity-based instructional approach that, like the lecture method, is usable in any classroom and is not tied to recognizing differing learner needs.

• “None of the above” only holds if no listed option names the required competency directly, which is not the case here.

Result: The competency of recognizing children with special needs and teaching them accordingly is therefore the specific area inclusive-education teacher training must target.