Which word correctly completes the sentence?

at the department store, shoes are on sale this week.

a.
childrens

b.
childrens'

c.
children's

The author’s purpose for including this in the introduction is

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.

Read this excerpt from "the all-american slurp." i pulled the strings out of my stalk. z-z-zip, z-z-zip. my brother followed suit. z-z-zip, z-z-zip. to my left, my parents were taking care of their own stalks. z-z-zip, z-z-zip, z-z-zip. suddenly i realized that there was dead silence except for our zipping. looking up, i saw that the eyes of everyone in the room were on our family. mr. and mrs. gleason, their daughter meg, who was my friend, and their neighbors the badels—they were all staring at us as we busily pulled the strings of our celery. what story element does the author develop in this excerpt? a) lot details about the party b) characterization of the lins c) characterization of the gleasons d) setting details about the gleasons’ house