There is a rising consensus amongst immunologists that the observed rise in allergies in the general population can be attributed to (i)____________ exposure to everyday germs. Known as the hygiene hypothesis, this counterintuitive idea could have far reaching implications – for one, we may now have to be more (ii)____________ those paternal prescriptions to scrub our children's hands at every opportunity. A. frequent B. wary of C. decreased D. cognizant of E. heightened F. indifferent to