Elizabeth Wants to Avoid Monotony and Add Spark to Her

Elizabeth wants to avoid monotony and add spark to her business messages. Which of the following should she do?

A) Elizabeth should make sure that every sentence is compound-complex because this is the most complicated type of sentence.
B) Elizabeth should use a brightly coloured font when she prints her documents.
C) Elizabeth should spritz her printed messages with an exciting fragrance.
D) Elizabeth should use a variety of sentence types.