Whenever Susan invites us to dinner, she customarily prepares a lot of delicious food

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

Whenever Susan invites us to dinner, she customarily prepares a lot of delicious food.

• A. naturally
• B. necessarily
• C. usually
• D. certainly