Consolidated Political Compass Test (CPCT) Practice Exam 2026 – Comprehensive All-in-One Guide for Exam Success!

Spirometry is a specific breathing test that measures how much air you can inhale and exhale, as well as how quickly you can do so. This test evaluates lung function by determining lung capacity, which includes the volume of air you can forcibly exhale after taking a deep breath. It is primarily used to help diagnose conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other disorders that affect breathing.

The focus of a spirometry test on lung capacity distinguishes it clearly from the other options, which pertain to different physiological measurements. For instance, evaluating blood glucose levels is a method related to endocrinology; assessing cardiovascular health typically involves tests like electrocardiograms or echocardiograms; and measuring body mass index (BMI) is a calculation that uses height and weight data rather than lung function. Hence, option B is the most accurate choice, reflecting the primary purpose of spirometry in clinical practice.