What is the author's purpose?
to motivate people to become researchers
to convince people that solar energy is needed
to criticize nuclear energy
to defend solar energy
The development of solar technology is vital to the American way of life. First and foremost, solar energy will make the United States an energy-independent nation once again. When we have the ability to provide cheap energy from the sun, we will not have to rely totally on expensive oil and natural gas imported from other countries. If cheap sources of energy become available, American industries will not find it necessary to raise prices and to increase inflation. Our national security will not have to depend upon foreign oil shipments. Secondly, solar energy will preserve the American environment. Power plants will no longer foul the air with hydrocarbons, pollute the waterways with oil spills, or contaminate the earth with radioactive wastes. Furthermore, solar energy will not exhaust itself. The American government would not have to revise its energy policy. As long as the sun shines, the world will have solar energy. Let us endeavor to learn to use it.