Usually are the food molecules broken down during glycolysis
1. atp
2. water particles
3. nucleic acids
4. simple sugars

  4. simple sugars

Usually simple sugars are the molecules used up in glycolysis.

Explanation:

Glycolysis is a process in cellular respiration and it is the way by which cells derive energy. This  process converts each molecule of glucose that contains 6 carbon atoms is converted into two molecules of pyruvate having 3 carbon atoms each.  

The process occurs in 10 steps and is catalyzed by several enzymes.  The process has two main phases, the energy requiring phase and energy releasing phase. In the energy requiring phase two ATP molecules are used up to convert glucose into two phosphate containing sugars having 3 carbon each. These being unstable get converted to two pyruvates having 3 carbon atoms each.

This process releases 4 ATP molecules. Thus the whole process releases two ATP molecules taking into account that two ATPs were used up in the first phase.

the answer will be a) proteins i believe