<span>The correct answer is A.
Gregorian chant is monophonic which means that it has a basic texture. It
consists only of melody and is not accompanied by a harmony. The same note is
produced from men and women and all notes are sung together. The Gregorian
chant is commonly used in churches and other religious congregations and was
first developed in 9th and 10th century in western and
central Europe. Pope St. Gregory the Great is credited for the chant.</span>
<span>Rembrandt’s pieces characterized by A. Shocking images and narratives:) tell me if I'm right!</span>
<span>The correct answer is D. Cumbia. Cumbia originated as part of the Afro-Caribbean culture in Colombia, and indeed is characterized by flutes and maracas, as well as several types of drums. Flamenco is characterized by the guitar, violin, and tambourine, and comes from southern Spain; tango is traditionally characterized by a solo guitar, and comes from Argentina and Uruguay; and merengue is characterized by an accordion and a tambora, and comes from the Dominican Republic. </span>
Uhm, Sly seems to fit the best.