Which test is utilized to measure the heart's conduction system during exercise, when the demand for oxygen is increased?

A) Holter monitoring
B) Electrocardiography
C) Pulmonary function test
D) Stress testing
E) Encephalography

Heart's Conduction System

A network of specialized cardiac cells responsible for generating and transmitting electrical impulses that regulate heart rhythm.

Oxygen

A chemical element with symbol O and atomic number 8, essential for most forms of life on Earth, particularly for cellular respiration.

Stress Testing

A method used in various fields to evaluate the robustness or performance of an entity under extreme conditions.