Observation of life i think
The correct answer is C. An independent clause is a group of words that make a simple sentence, in other words it expresses thought typically
Because back then they believe that if they didn't see it then it is not there or created for example when the french believe that the earth is flat but we know now that it is round.
The roads are super unsafe and slippery during the winter, but during the summer the roads are safer just a lot more busy.
