Which complex compound is matched with its correct building block? 

A)  proteins-fatty acids 
B)  nucleic acids-monosaccharides 
C)  chromosomes-proteins 
D)  complex carbohydrates-simple sugars such as glucose

Complex Compound

refers to a chemical compound formed from the bonding of one central atom or ion to several surrounding atoms, ions, or molecules.

Building Block

is a fundamental component or element used as a base for constructing something more complex, such as molecules for life or materials for construction.

Monosaccharides

The simplest form of carbohydrates, consisting of single sugar molecules like glucose and fructose, which are essential energy sources.