Which of the following is true regarding equestrian portraits?
a.
the first examples were seen in the nineteenth century.
b.
they exaggerate the facial features and perfection of the subject in the painting.
c.
they were a form of social protest that was popularized by picasso.
d.
they used the image of a horse beneath a political figure to convey the subject supreme power and leadership.

The true about equestrian portraits is:

d.  They used the image of a horse beneath a political figure to help convey the subject supreme power and leadership.

Explanation:

The reason behind the answer is because first, the first examples of equestrian portraits are not from the 19th century. People have been portraying themselves on horses since the Chinese dynasties before the unification of china. Second, exaggerating facial features is not a rule for equestrian portraits. Third, it didn't become popular just because Picasso used it to manifest his discontent. People have loved horses since they domesticated them. Fourth, they always used horses to provide political figures another level of superiority, Napoleon white horse portrait is an example, his horse was a monster, while he was pretty short.

the answer is counterpoint.

counterpoint definition: "the art or technique of playing a melody or melodies in conjunction with another, according to fixed rules."

counterpoint is present in a lot of baroque music- such as bach (notably his wtc prelude and fugues) and scarlatti, but can also be found in music by mozart, beethoven. it can even be found in music as modern as john williams!