The following is missing for the question to be complete:
A. Flute
B. Clarinet
C. Trumpet
D. Violin
E. Harpsichord
Answer: D. Violin
Explanation: The Baroque Orchestra is a mixed-instrument orchestra, starting with some of the stringed instruments, such as the violin, but it can also be viola, cello and bass. In addition, there are some of the woodwind instruments such as flute or oboe, then brass, as well as organ or harpsichord and timpani. The number of orchestra members varied but was far smaller than, say, the size of the orchestra at the time of Romanticism. Due to the fact that there were also stringed instruments in the Baroque orchestra, which are melodic instruments because of their harmony of music playing, it is possible to play instrumentals. In this way certainly the violin and other stringed instruments contributed to the development of instrumental music during the Baroque.