Which statement BEST describes how the themes that are developed in Passage 1 support the title
"O Pioneers!"?
Alexandra is a pioneer because she is willing to
endure financial hardship to make life better for
future generations.
Alexandra is a pioneer because she is willing to work
hard to realize her dream of settling the vast land.
Alexandra is a pioneer because she is willing to
leave her brothers behind as she continues her
journey westward.
Alexandra is a pioneer because she is willing to join
other families and build a farming community
together.

The statement which BEST describes how the themes  that are developed in Passage 1 which support the title  "O Pioneers!" is:

Based on the complete text, we can see that the story of Alexandra is told as he was the first of her kind to make a push for getting vast land both for her and for her people.

With this in mind, we can see that this action of hers made her a pioneer and this was because she was the first person to achieve that feat.

Therefore, the correct answer is option B

Read more about "O Pioneers!" here:

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The correct answer is Alexandra is a pioneer because she is willing to work hard to realize her dream of settling the vast land.

Explanation:

Pioneer is a term that comes from the French language (pionnier) and that refers to the subject who begins to explore or populate virgin territories.

It is someone who makes the first discoveries or the first jobs in a certain activity.

In this case we have Alexandra, who is willing to work hard to realize her dream of settling the vast land. This tells us that she is a pioneer.