Which of the following types of measurements includes size, weight, and proportions?

Orthostatic measurements pertain to the body's responses to changes in posture, particularly when moving from sitting or lying to standing. This type of measurement is primarily concerned with blood pressure and heart rate changes, rather than physical dimensions such as size and weight. Therefore, orthostatic measurements do not encompass the characteristics outlined in the question.

Fundal measurements relate to the height of the fundus, or the upper part of the uterus, during pregnancy. This type of measurement is primarily used in obstetrics to monitor fetal growth and is not concerned with general body size, weight, or proportions. Thus, it does not fit the criteria set forth in the question.

Circumference measurements refer specifically to the distance around a body part, such as waist or head circumference. While circumference can provide some information related to size, it does not encompass the broader aspects of weight and proportions as defined in anthropometric measurements, making it an incomplete choice.