solve these thrice qno

Question # 3. Efficiency with which investment is used outweighs the importance of rate at which investment is made. Justify the above statement by providing the relevant data of two developing countries. Question # 4. Specialization in manufactured goods is considered more beneficial to the nation's economy rather than being competent in producing primary goods. With reference to history of Pakistan's economic development, how would have Pakistan grown by now if it had focused on production of manufactured goods? Question # 5. Whether the existence of MNCs support or hamper the development of developing countries? Support your answer with evidences