73. The word it in paragraph 1 refers to which of the following word/expression? (A) South American (B) importance (C) corn (D) cornbread

76. Why does the author mention johnnycake in paragraph 2? (A) To show people's affection for cornbread. (B) To give an example of various names used to refer to cornbread. (C) To provide another term that people still use to denote cornbread. (D) To support the claim that it is the most popular type of bread in the United States.