Which of the following instruments was used in the Baroque period? A. A hammond organ
B. A fortepiano
C. A pianoforte
D. A harpsichord

D. harpsichord

Explanation: The harpsichord was widely used in Renaissance and Baroque music, both as an accompaniment instrument and as a soloing instrument. During the Baroque era, the harpsichord was a standard part of the continuo group. The basso continuo part acted as the foundation for many musical pieces in this era. During the late 18th century, with the development of the fortepiano (and then the increasing use of the piano in the 19th century) the harpsichord gradually disappeared from the musical scene (except in opera, where it continued to be used to accompany recitative). In the 20th century, it made a resurgence, being used in historically informed performances of older music, in new compositions, and, in rare cases, in certain styles of popular music

option c (nickel) is not found in earth's crust. the earth's crust basically contains eight (8) elements namely: oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium (listed in order of abundance).