I think it's B because people want to knows who article there reading and with no author they can think it's a lie.
C. foramina
Foramen : A natural opening. Although a foramen is usually through bone, it can be an opening through other types of tissues, as with the foramen oval in the heart .
- hope that this helps
The passage used a combination of comparison and contrast and: <span> C. cause and effect.
</span>The passage give us a well descriptive explanation on how the microorganisms (the cause) developed in such a way to the point where their fossils ended up as a petroleum/coal (effect)
Parables & Fables.
If this isn't correct, then i'm sorry in advance.
Global warming and changing climates there you go my friend