Final answer:
The tool used to screen and diagnose for Osteoporosis in the Female Athlete Triad is the Dual-energy X-ray absorptiometry (DXA) scan.
Step-by-step explanation:
The tool used to screen and diagnose for Osteoporosis in the Female Athlete Triad is Dual-energy X-ray absorptiometry (DXA) scan. This scan can measure bone density and determine fat content by directing low-dose X-ray beams through the body and measuring the energy absorbed. Comparing the patient's bone density to the normal level of peak bone density helps in diagnosing osteoporosis.