Which sentence includes the correct punctuation?

Which sentence includes the correct punctuation?
 
  a. Because you weren't home, I visited John.
  b. Because you weren't home, I visited John.
  c. Because you weren't home I visited John?
  d. Because you weren't home, I visited John,

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Ques. 2

Going to work is an example of a/an
 
  a. gerund.
  b. gerund phrase.
  c. infinitive.
  d. participle.

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Ques. 3

Which sentence includes the correct punctuation?
 
  a. Is your sister an M.D.?
  b. Is your sister an MD.
  c. Is your sister an M.D.
  d. Is your sister an M.D.

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Ques. 4

Deciding is an example of a/an
 
  a. gerund.
  b. participle.
  c. infinitive.
  d. preposition.

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Ques. 5

Which sentence includes the correct punctuation?
 
  a. Patty said Please stop by and see me sometime.
  b. Patty said Please stop by and see me sometime.
  c. Patty said, Please stop by and see me sometime?
  d. Patty said, Please stop by and see me sometime.

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Ques. 6

To think is an example of a/an
 
  a. gerund.
  b. participle.
  c. infinitive.
  d. preposition.

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Ques. 7

Which sentence includes the correct punctuation?
 
  a. Reality television is not appropriate for all ages,
  b. Reality television is not appropriate for all ages?
  c. Reality television is not appropriate for all ages.
  d. Reality television is not appropriate for all ages;