Step 1: Concept
Body Mass Index (BMI) is a measure of body fat based on an individual's weight and height.
Step 2: Meaning
BMI is calculated as the individual's weight divided by the square of their height. It provides a simple numeric measurement to assess whether a person has a healthy body weight relative to their height.
Step 3: Analysis
Let us analyze each option:
A) Basal Mass Index: This term does not exist in medical or scientific literature.
B) Beauty Measurement Index: While this might be used colloquially, it is not the official term for BMI.
C) Body Mass Index: This is the correct and widely accepted term for the measure of body fat based on weight and height.
D) Body Mass Intensity: This term is not recognized in medical or scientific contexts.
The given options indicate that only one option correctly defines BMI, which is "Body Mass Index."
Step 4: Conclusion
Therefore, the correct definition among the provided options is Body Mass Index (BMI).
Final Answer: (C)