Read the following passage from a story. Wind whipped at Vanessa, Mo and Jaime's faces as they trudged up the mountain. "Do you have the ice samples?" Vanessa questioned Mo again.

"Why don't you carry them the rest of the way?" he responded irritably. Mo was digging into his backpack to retrieve the samples when suddenly, a gust of wind snatched them out of his hands, sending them tumbling down the mountain.

"If we lose those, this was all for nothing!" Vanessa cried. The wind roared angrily, churning flakes of snow that had newly begun to fall. How far had the samples gone? The three scientists stared at each other in horrified silence.

"I'll go back for them," Jaime spoke up quietly.

Vanessa and Mo looked at Jaime. He was the smallest and youngest of the group, barely strong enough to carry his large backpack.

"I'll go," he said louder.

Which sentence from the passage provides the best clue that a theme of the story is "Courage can be found in the people you least expect it"?

A
"'Why don't you carry them the rest of the way?'" he responded irritably.

B
"How far had the samples gone?"

C
"The wind roared angrily, churning flakes of snow that had newly begun to fall."

D
"He was the smallest and youngest of the group, barely strong enough to carry his large backpack."