Which transition would best clarify the relationship between the claim and the evidence in these sentences?

Mr. Malloy should receive the Teacher of the Year award for several reasons.[___], he teaches every lesson with a twist of creativity that
delights his students.

A. Most importantly
B. Besides that
C. Fortunately
D. Meanwhile

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.