Поставьте вопросы к каждому члену предложения. It is represented by Universities, politechnics and specialized colleges*.

Разделительный. It is represented by Universities, polytechnics and specialized colleges, isn\'t (is not) it?

Общий. Is it represented by Universities, polytechnics and specialized colleges?

Альтернативный. Is it represented by Universities, polytechnics or specialized colleges?

Специальный. What is it represented by?

What educational institutions is it represented by?

What colleges is it represented by?

Вопрос к подлежащему. What is represented by Universities, polytechnics and specialized colleges?