c. egg yolk because its mixed with glutinous material
The answer is basso continuo
From the Italian language sometimes abbreviated as b.c is a technique of self-composition and execution and essential from the Baroque period
The basso continuo is played for one or various instruments, typically and harmonic as the keyboard instruments or others as the harp or lute
with the voice of bass simultaneously in charge of an instrument of grave tessitura like the violoncello, bassoon, the viola da gamba, contrabass and sometimes contrabasso.
It also receives the name of simultaneous accompaniment
Brueghel's Great Fish-Market, dating back from the year 1603, comprises many elements of Mannerist landscape painting. Presented in a panorama view, the picture opens up across a downward-sloping foreground overflowing with tens of people grouped around the stalls and booths of a fish market, with a beautiful blue sky in the background, that merges with the sea.
