Canadian eskimos stay in igloos in the winter and move into skin tents in the spring

d.i almost had them all lined up, and then my baby brother knocked them all over.

this contains a dependent and independent clause, it is not simple.

the answer is c.   the fact that the poet mentions what some people wear when they go to church to keep the sabbath shows that she knows about this tradition or custom. this demonstrates her authority because, when she decides the way she will worship, she knows what she is talking about and chooses an alternative to only going to church to keep the sabbath.