Question

Biofuels are energy sources made from plants. Building a campfire with sticks and logs is a simple example of using a biofuel. Today, the world's leading biofuel is ethanol made from corn grown in the United States. Other biofuels include ethanol from sunflowers and biodiesel from soy, switch grass, or palm oil.Read the second sentence from paragraph 2. How does the sentence contribute MOST to the meaning of the paragraph?


It illustrates the idea that biofuels can be used as an alternative to fossil fuels.


It connects the idea of biofuels to an image that may be familiar to readers.


It contrasts biofuel from the forest to forms of fuel grown on farms or plantations.


It provides a basis to show how biofuel technology has changed over time.

Answer 1

It connects the idea of biofuels to an image that may be familiar to readers.

Explanation: The campfire example makes the abstract term "biofuel" concrete and relatable. It’s not primarily contrasting forest vs. farm fuels or discussing fossil-fuel alternatives or technological change.