If you’re working on reducing stress, your first step should be to identify the causes of stress
According to a quick g-o-o-g-l-e search, D. Reflexology, seems to be the correct answer!
In short, reflexology is a type of massage that involves applying varied amount of pressure to the feet, hands, & ears.
Hope this helped!
(If I'm wrong, please let me know in the comments)
1. ingestion
2. inhalation
3. absorption
4. <span>injection</span>