Three little piggy's, what are you asking?
Character is built through selflessness and not personal achievements is your answer I believe.
Answer:
Papa's agreeing to teach Sarah to ride a horse and drive a wagon develop a theme in Sarah, Plain and Tall which expresses the love and selflessness that exists in a family unit.
Explanation:
The central theme in Sarah, Plain and Tall is the family. As Papa agrees to teach Sarah to ride a horse and drive a wagon, we see that the this shows up the buildup of a complete family unit.
In the story, Papa, known as Jacob has been without a wife after his wife died. He was the only one taking care of his two children, Anna and Caleb and the farm. So, he made an advert asking for a wife and a mother. Then Sarah responded to the advert.
When Sarah came, she demanded to learn how to ride horse and drive wagon which Papa agreed to teach her. This builds up the existing theme of the family and expresses the love and selflessness the husband portrays to his wife.
The sentence that does not have an error in subject and verb agreement is, "Lemonade and iced tea mixed together is a refreshing drink". As you notice it, the subject of the sentence is "lemonade and iced tea", but takes the singular form of the verb. It is because the words "lemonade and iced tea" only refers and describes one thing, which is the word "drink".
2) …put Mayan objects in boxes.
3) …had lunch together.
4) …sent emails to all team members.
5) …wrote a report.
6) …swam in the hotel pool!