Final answer:
Losing weight can lower blood pressure, increase energy levels, and promote overall health.
Step-by-step explanation:
The best choice among the options that effectively justifies the need for weight loss is option A: losing weight can lower blood pressure, increase energy level, and promote overall health. This choice provides a scientific argument by specifying the positive health benefits associated with losing weight. For example, losing weight can lower blood pressure levels, which reduces the risk of developing cardiovascular diseases. Additionally, weight loss can increase energy levels and support overall health by reducing the risk of obesity-related health problems such as type 2 diabetes and certain cancers.