What is one way to determine whether something you have read is an opinion? a. look for dates and people's names. b. check other sources for the same opinion. c. look for statements of feelings or beliefs. d. decide whether the source agrees with what you believe is true.

gold discovery in california, and pioneer settlers were sometimes pulled west because they wanted to make a better living. others received letters from friends or family members who had moved west. these letters often told about a good life on the frontier. the biggest factor that pulled pioneers west was the opportunity to buy land.

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explanation:

may i ask what challenges?