Which of the following is a crucial enzyme involved in glycolysis?

Explanation

Phosphofructokinase is a key regulatory enzyme in glycolysis, controlling the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate. While hexokinase and pyruvate kinase are also involved in glycolysis, phosphofructokinase is considered the primary rate-limiting enzyme. Glucose 1,6-bisphosphatase is not an enzyme associated with glycolysis.