<h2>Chief Of Staff</h2>
The title chief of staff recognizes the leader of a complicated system, organization, or body of individuals and it likewise may recognize a primary staff officer (PSO). The PSO administrator of the approving staff or the main aide-de-camp to an extraordinary positioned person, example a president or a superior army officer.
<span>For mutual protection against real or imagined enemies. not 100% sure i did some research not to sure if this is correct.
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Isnt there 7? Because i coukdnt find 8, only 7 like you can see on this website:
https://www.google.com/search?client=ms-android-verizon&ei=2mIEXPO0NKjy5gLsvbWAAQ&q=8+categorie+of+21+centure+job&oq=8+categorie+of+21+centure+job&gs_l=mobile-gws-wiz-serp.3..33i22i29i30j33i160.3022.13936..14195...2.0..0.378.4110.6j18j3j2......0....1.......5..0j46j35i39j46i131j0i67j46i67j46i131i67j0i22i10i30j0i22i30j0i13i30j0i13i10i30j0i8i13i30j0i13j33i22i10i29i30j33i10i160j33i10i299j33i299.YXCyfCkVbUw
https://en.m.wikipedia.org/wiki/21st_ce
Answer
Experimental
Explanation
An experimental research is any conducted research with a scientific approach where a set of variables are kept constant while the other set of variables are measured as the subject of the experiment.The study involves the random assignment of participant into different groups.
To be considered as an experimental study, it should give some sort of treatments to a group and recording the effects. (such as controlling type of mil children drink). Despite the uncertainty whether the result is accurate.