D. Ecstasy. MDMA is the pure form of ecstasy.
The best answer would be the third option. Extended joints is a possible result of low levels of activity caused by being overweight. Being overweight, adds more pressure on your body parts which could lead to diseases that involve the joints. The most common is arthritis. More weight means more pressure on our joints especially on the lower part of the body.
If this is a True or False question, then its false. Hope this helps! :)
A complete blood count (CBC) test
Tracking your flexibility over time as you train. There are no requirements on how flexible you need to be and there is no correlation of your length of life or muscle strength with how flexible you are.