Having better access to shelter and has contributed to global population growth
a. clean water
b. texhonlogy
c. information
d. government

A better shelter and A. clean water lead to growth of global population.

Availability of a good shelter and clean water both help an individual lead a healthy life. The shelter protects him from external environmental factors that may be harmful to his existence. These factors include sunlight, rains, lightning, etc.

Clean water keeps the water-borne diseases away and helps the individual maintain hygiene which is ultimately necessary for his physical well-being. Thus, the availability of shelters and clean water increase the life expectancy and ultimately result in global population growth.

answer is b.

  it is always the best policy to have good communication and good relations between individuals and, specially, between leaders of the countries. for this purpose, among others, there is a common place, the united nations, where the representants can present his and learn about the other country's policies.