The two select buttons communicate with each other using JavaScript. Thus they implement the radio button formatted question at the bottom of this document in a more distributed manner.
Early of hearing loss is by the fact that the other senses are able to compensate for moderate amounts of loss, so that people frequently do not know that their hearing is imperfect.
Early ______ of hearing loss is ______ by the fact that the other senses are able to compensate for moderate amounts of loss, so that people frequently do not know that their hearing is imperfect.

A. discovery .. indicated
B. development .. prevented
C. detection .. complicated
D. treatment .. facilitated
E. incidence .. corrected

Note: the correct answer is (C).