Which sentence from the passage contains the
central idea?
Read the passage from "Zero-Gravity Nutrition."
It has long been a challenge to decide on astronauts'
food. Astronauts don't have the choice of foods that
are on Earth. In early space travel, the solution was to
put food in tubes. Tubed food probably sounds
strange to you! Today, foods are chosen to travel and
keep. For example, foods such as nuts and dried fruit
can be eaten in space just as they are.
o It has long been a challenge to decide on
astronauts' food.
O Astronauts don't have the choice of foods that are
on Earth.
O Tubed food probably sounds strange to you!
O Today, foods are chosen to travel and keep.

The sentence from the given passage from ''Zero gravity Nutrition'', which contains the central idea of the passage, is, ''astronauts don't have the choice of foods that are on Earth.'' Therefore, the option B holds true.

What is the significance of a central idea?

A central idea is referred to or considered as such an idea in any given passage, which contains the actual message that is intended to be conveyed to the readers of the literary composition by an author. Moreover, a central idea is also a moral or base theme of a given passage.

In the given passage from ''Zero-Gravity Nutrition'', the author wants to convey how the astronauts cannot the same food in the space that they are able to consume on the Earth. Thus, it is true regarding the central idea of the passage.

Therefore, the option B holds true regarding the significance of a central idea in the passage from ''Zero-Gravity Nutrition''.

Learn more about a central idea here:

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