It may not exactly be a primary source because it's not exactly like, for example, research paper. Research paper has been reviewed by many peers and has been tested to see if it's all true, so you can put more reliability on it.
A blog is just put up on the Internet without peer review or anything. It's raw and nobody knows what's true and what's not.
Answer:
I guess it's D; in the garden
Unless the rain stops, we must stay inside all afternoon.
A trochaic tetrameter is a meter in poetry. it refers to a line of four trochaic feet. The word tetrameter means that the poem has four trochees
