Paradigmatic upheavals often occur after a period of increasing (i) ______ which creates quandaries for the scientific or cultural status quo. As the dominant theoretical models are questioned and (ii) ______ new models are proposed that may ultimately alter the perceptions of the entire population.

Blank (i)	Blank (ii)
A. concatenation	D. impugned
B. aberration	E. emblematized
C. inculcation	F. approbated