Which of the following describes the study of the last four limbs of yoga?

Denise is learning to begin a pose on exhalation or inhalation of breath, then to breathe deeply while holding the pose, and then to come out of the pose, either on an inhalation or exhalation.
Denise is learning about withdrawal of the senses and concentration in the context of posture and breathing. She is also meditating by achieving breath awareness.
Denise is learning about ten ethical practices that will help her regulate her internal states and deal with the outside world.
Denise is learning about classical, static asanas and pranayama.

I need some help !!! 15 pts ! & markin brainliest.