During moderate aerobic exercise in a healthy individual, which change in blood glucose and dominant metabolic pathway is most likely?

Blood glucose will always sharply increase because exercise shuts down hepatic glucose production while muscle releases glucose into the blood via glycogen synthesis.

Exercise in healthy individuals switches off adipose lipolysis entirely and forces the pancreas to secrete glucagon only, leading to rapid hyperglycemia regardless of muscle activity.

Blood glucose becomes zero because all glucose is permanently converted into glycogen in muscle within minutes of starting exercise.

Blood glucose may decrease moderately as muscle glucose uptake increases (insulin-independent transporters are activated by exercise) and hepatic glycogenolysis increases to supply glucose—balance depends on exercise intensity and duration.