The term ____ relates to the circumference around a person's body.

• girth measurement
• hydrostatic weighing
• body fat
• body composition

The term that relates to the circumference around a person's body is "girth measurement." To calculate girth measurements, you need a flexible measuring tape. Here's how to do it:

1. Stand in an upright position with your feet together and relaxed.
2. Locate the specific areas for measurement, which include waist, hips, chest/bust, thigh, and upper arm.
3. Wrap the measuring tape around the target area, ensuring it is parallel to the ground and not too tight or loose.
4. Take the measurement by looking at the number where both ends of the tape meet.
5. Write down each measurement as you go for accuracy.
6. Repeat the process for all desired areas.
7. Use these measurements to track changes in body size or calculate ratios, such as waist-to-hip ratio or waist-to-height ratio.

Other options listed are not related to measuring the circumference around a person's body:

- Hydrostatic weighing is a method used to determine body composition, specifically body fat percentage, by weighing a person underwater.
- Body fat refers to the proportion of fat tissue in a person's body composition, usually expressed as a percentage.
- Body composition refers to the distribution of fat, muscle, bone, and other tissues in a person's body. It is typically assessed through various methods, including girth measurement, skinfold thickness, bioelectrical impedance, and DEXA scan.