Answer:
Primary source is more reliable, but writers tend to use both primary and secondary source.
<span>Pierre, Micaela, and Jon are friends, but Pierre and Micaela are much closer to each other than either of them is to Jon. According to the concept of Triadic Closure Jon might be a friend of either of them and became friend to the person at some point in time through other person.</span>
True because god is always the same he never changes