The reply is:

CRITIQUE

The check gadgets:

Every query encodes a phrase letter by letter, every another way. The vital issues to notice are that the three choices A, B and C should not choices, however descriptions of how the letters A, B and C are encoded and that in every phrase, the query mark might be changed by IQ. (That often signifies that the letter after that may be a U.) The scribbled remarks outline (or affirm) the phrase.

1 PIQUE: easy line drawing of the letters
2 CLIIQUE: atomic variety of inexperienced aspect is letter index
3 LIQUOR: seven-segment show with starred segments off
4 LIQUID: variety of edges is letter index
5 UNIQUE: index of Greek letter is index of Latin letter
6 OBLIQUE: prepend the letter to get the identify of a moon
7 PIQUANT: variety of areas is letter index
8 ANTIQUE: first letter of named internet colors
9 MYSTIQUE: variety of interior angles is letter index
10 TECHNIQUE: key between the given keys
11 UBIQUITOUS: half drawn letters as much as arrow
12 MOZAMBIQUE: first identify of African nation or its capital (Thanks, user39583)

(Comment: The Greek-letter factor is &Alhpa;1Ω24, if you’ll; after getting a quantity from the letter, use A1Z26 to get a Latin letter. I do not suppose the rotation issues. For query 2, every black pixel is a component within the periodic desk and the central inexperienced pixel is the aspect itself. User39583 discovered that the a blue star within the African flags signifies that the primary letter of the capital is taken as an alternative of the primary letter of the nation’s identify. To take away ambiguity, all different stars have been faraway from the flags.)

The grid:

The grid on the backside has twelve gadgets, every akin to a query of the check. We will use the identical guidelines as above to get the letters:

    E   E   S
    A   R   Y
    O   T   U
    E   E   E

The numbers:

Noe use these numbers as indices to the grid to extract letters:

sea are eye tea ? you eee

These are homophones of letters. After changing the query mark with IQ as above, we get the reply: CRITIQUE.