Science and technology is co-related with health, population and environment. They are the significant means of development process. It's making the human life more comfortable and productive invention of various technology has made the treatment of health easy and reliable.
Sedentary<span> activities include sitting, reading, watching television, playing video games, and computer use for much of the day with little or no vigorous physical exercise. A </span>sedentary<span> lifestyle can contribute to many preventable causes of death.</span>
If you look it up, it will give you the approximate value of SA= 2205.4. I really don’t know if this is right because surface area is of a 3D object and area alone is for a 2D object. You may want to look up the proper formula.
I believe the correct answer is B. Spread by contact.