Read these sentences from the article. Which one is an opinion?

A.Yet she was deeply saddened when she saw her students…hungry and without shoes.
B.The union worked with California's farmworkers to negotiate for better pay.
C.Organizing people…is like finding the pot of gold at the end of a rainbow.
D.But Huerta successfully negotiated a new contract with 26 grape growers.

C. Organizing people…is like finding the pot of gold at the end of a rainbow.

The opinion sentence is: C. Organizing people…is like finding the pot of gold at the end of a rainbow.

To identify the sentence that is an opinion, we need to understand that an opinion is a statement that expresses a personal belief or perspective rather than a fact. Let's examine each sentence:

A. "Yet she was deeply saddened when she saw her students…hungry and without shoes."
This sentence describes the emotion of being deeply saddened. It is a subjective statement and could be considered an opinion.

B. "The union worked with California's farmworkers to negotiate for better pay."
This sentence states a fact that the union worked with farmworkers to negotiate for better pay. It does not express a personal belief or perspective, so it is not an opinion.

C. "Organizing people…is like finding the pot of gold at the end of a rainbow."
This sentence uses a metaphorical comparison but does not explicitly express a personal belief or opinion. It could be considered a figurative language, rather than an opinion.

D. "But Huerta successfully negotiated a new contract with 26 grape growers."
This sentence states the fact that Huerta successfully negotiated a new contract with 26 grape growers. It does not express a personal belief or perspective, so it is not an opinion.

Based on this analysis, sentence A. "Yet she was deeply saddened when she saw her students... hungry and without shoes" is the sentence that expresses an opinion.