Read these central ideas from the article "Eileen Collins—NASA’s First Female Shuttle Commander to Lead Next Shuttle Mission." Collins is the first female Shuttle commander.

Collins feels that completing a mission is the most exciting thing about spaceflight.

How does the author develop these ideas?

A: The author states that on her last mission, Collins became the first female Shuttle commander and includes a statement from Collins saying, "seeing the successful completion of the mission" is the most exciting part of spaceflight.

B: The author explains that as an astronaut, Collins pursued operations research, which led to her becoming a Shuttle commander, and includes Collins's words that she used to think the launch was the most exciting.

C: The author begins the article by stating that Collins is the first female Shuttle commander and ends by explaining that Collins enjoys exploring space so much she wants to travel there as a tourist.

D: The author provides background information about Collins's career goal to become the first woman Shuttle commander and explains that Collins loves spaceflight.

3one of the biggest impacts a building has on earth is the energy it uses. currently, most of the world’s energy comes from burning fossil fuels. these fuels are dirty and when they are burned they pollute the air and water. one way to burn fewer fossil fuels is to reduce the amount of electricity a building has to use. passive solar heating, which uses heat from the sun, reduces the amount of fossil fuel used to heat buildings. passive solar heating requires a south-facing wall made of glass. when sunlight shines through the wall, it is collected and used to warm the building. another way green buildings reduce their electricity use is to install other energy sources. for example, some green buildings use panels that turn energy from the sun into useable electricity. which is the best summary of paragraph 3? a) fossil fuels are dirty and pollute the air and water. most of the world's energy comes from these fuels. b) the biggest problem of buildings is that they use fuel that is dirty for heating. they need to do something to be more energy efficient. c) panels that turn energy from the sun into electricity and passive solar heating can stop the burning of fossil fuels which pollute air and water. d) since fossil fuels are dirty and pollute the air and water, other technologies that pollute less and produce energy have been developed like solar energy and green buildings.