Which sentence uses punctuation correctly?

a.
I just read an excellent article about climate change; however the author definitely had a bias on one side of the debate.

b.
I just read an excellent article about climate change; however, the author definitely had a bias on one side of the debate.

c.
I just read an excellent article about climate change however; the author definitely had a bias on one side of the debate.

d.
I just read an excellent article about climate change, however; the author definitely had a bias on one side of the debate.

If you begin to question the validity of the catholic church's teachings, then you could be considered a

Match the author with the description a. ernest hemingway b. john steinbeck c. robert frost d. langston hughes (1) summers spent in pacific grove, california influenced the symbolism in his literature (2) his poetry includes simple, direct language. many are dramatic monologues written in free verse are about life on new england farms (3) the mood and tone of his literature is largely shaped by his experience as a soldier in world war 1 (4) his poetry and short stories include dialect and colloquialisms which gives his primarily african american characters distinctive voices

Explain the purpose of eliezer's father's allusion to mrs. schachter.