What is the safest type of stretching for beginners to start with.?

-Static Dynamic Isometric Ballstic
-Passive Active PNF Begginers should start with the safest types of
 stretching. Dynamic is also a movement stretch but a much more controlled and  relaxed movement. This is considered a safe stretch for beginners. (ex. - leg swings, arm rotations, torso twists.)

Can ppl. develop self esteem, decision making..