Answer:
A. lactate
Step-by-step explanation:
Warburg effect in oncology is defined as the alteration in metabolic pathway of cancer cells that allow glucose fermentation even in the presence of oxygen.
Normal cells or noncancerous cells undergo oxidative phosphorylation to produce energy. but cancer cell, produce their energy through a high rate of glycolysis which increases the metabolite lactate by lactic acid fermentation even in the presence of adequate oxygen.
Hence, the correct option is A.