Question

1 what is most likely the reason that the selection begins by describing something that most people have seen on television or in photographs?
to explain the risk of weightlessness
to persuade the reader to watch television
to capture the reader’s attention
to provide some practical advice
2 which of the following would make the best heading for the last paragraph?
getting ready for a trip to space
reducing the effects of weightlessness
special diets for space travelers
exercising aboard a spacecraft
3 which sentence from the selection best summarizes the section “why do astronauts feel weightless in space?”
there is no gravity beyond the earth’s atmosphere.
earth’s gravity is more powerful than gravity in space, so the term zero gravity is really misleading.
skydiving illustrates what free falling is.
astronauts feel weightless because they are free falling, or experiencing the force of gravity without anything to oppose it.
4 study the web diagram.
web diagram with central node “effects of weightlessness” and surrounding nodes: “shifting of fluids toward head”, “difficulty determining up from down”, “bone weakness”, “spreading of vertebrae”, and one empty circle
which of the following belongs in the empty circle?
free falling
microgravity
zero gravity
muscle weakness

Explanation:

Question 1

To determine the reason for starting a selection with something most people have seen on TV/photographs, we analyze the options. Explaining weightlessness risk, persuading to watch TV, or giving practical advice don't fit. Starting with familiar content is a common technique to grab readers' attention.

We need a heading for the last paragraph (context about space/weightlessness). "Getting Ready for a Trip to Space" is too broad. "Special Diets" or "Exercising Aboard" focus on specific aspects. "Reducing the Effects of Weightlessness" aligns with addressing weightlessness impacts, which is a central theme.

The section "Why Do Astronauts Feel Weightless in Space?" needs a summarizing sentence. Option 1 is incorrect (gravity exists in space). Option 2 is about term accuracy, not the reason. Option 3 is an example. Option 4 explains the cause (free falling with no opposing force), which matches the section's focus.

Answer:

to capture the reader’s attention (the option with this text, likely the third option in the original list)

Question 2