Answer:
this...
is the vague pronoun in the sentence...
A green wavy actually would underline the text that may be incorrect grammatically. So it would be FALSE.
Answer:
We can learn many things from journeys. We can learn about different cultures, we can learn about the people around us, and we can learn more about ourselves. Journeys are times of transformation. We usually learn things about ourselves that we didn't know before, and we become more in touch with who we are. But for some people, they may learn new things about themselves they don't like, and will try avoiding it.