हरित क्रांति मुख्य रूप से निम्नलिखित में से किस आर्थिक क्षेत्र से जुड़ी थी?

Which of the following activities is NOT included in the Primary Sector of the economy?

Which of the following services/entities in India belonged to the private sector after privatization, unlike the other three which are public sector enterprises?