The uncertainty principle (select all that apply):

Choose at least one answer.

	a. has been established by experiments regarding the movement of material objects.
	b. proves that we cannot validate the principle in the submicroscopic world by using tiny signals like light to impinge upon what is being observed because the impingement itself introduces uncontrollable tiny disturbances, hence the uncertainty.
	c. explains why part of our consciousness (the physical) is experienced externally, whereas part (the subtle body) is experienced internally.
	d. states that we can simultaneously determine the position and the momentum (mass times velocity) of a quantum object with utmost accuracy.