5.3 Highlight the letter of the topic sentence in this paragraph.
5.3 a. Did I come to Venice to see the beautiful St. Mark's Basilica? b. Am I here to walk across the elegant white stone Bridge of Sighs? c. The main reason I am in Venice is to learn to pilot a gondola. d. A gondola is the traditional boat taxi of Venice's canals. e. It has a low hull and a steel prow and is rowed by a gondolier who wears an old-fashioned striped shirt and steers with a long oar.