<span>"b. avoided when writing". It could be D, but they can't always be combined this way, so it is best to avoid them.
</span>
C would be the answer to this
D) pioneers believe the Oregon Trail to be sacred because 300,000 people travelled it
Answer: A. We took a kayak to a beach where sea turtles hatch.
Explanation: It is the only sentence that doesn’t include commas.
