Which sentence uses the italicized vocabulary word correctly

B is not the correct answer.  That is not an idiom.  Minor characters do not undergo huge changes in stories.  Minor characters are there to add information or to strengthen the story surrounding the main/major character.  Barren means little or having none, so lush and barren are opposites, making this an incorrect answers as well.  Peculiar means strange.  Therefore, a dog acting in this way would be peculiar, making A the correct answer.

gerund phrase: giving more than a person needs.

noun use: predicate noun.

b. we are called to honor our own words of reverent prayer with resolution in the deeds we must perform to preserve peace and the hope of freedom.