'Clear up the question of who is at fault'.Illuminate as in make free from confusion or ambiguity

light up start to burn with a bright flame make lighter or brighter become clear ignite begin to smoke.light with few burdens make lighter or brighter begin to smoke to come to rest, settle cause to start burning fall to somebody by assignment or lot alight from (a horse) start or maintain a fire in (physics) electromagnetic radiation that can produce a visual sensation any device serving as a source of illumination a particular perspective or aspect of a situation the quality of being luminous an illuminated area a condition of spiritual awareness the visual effect of illumination on objects or scenes as created in pictures a person regarded very fondly having abundant light or illumination mental understanding as an enlightening experience merriment expressed by a brightness or gleam or animation of countenance public awareness a divine presence believed by Quakers to enlighten and guide the soul a visual warning signal a device for lighting or igniting fuel or charges or fires of comparatively little physical weight or density (used of color) having a relatively small amount of coloring agent of the military or industry not great in degree or quantity or number psychologically light characterized by or emitting light (used of vowels or syllables) pronounced with little or no stress easily assimilated in the alimentary canal (used of soil) loose and large-grained in consistency (of sound or color) free from anything that dulls or dims moving easily and quickly demanding little effort of little intensity or power or force (physics, chemistry) not having atomic weight greater than average weak and likely to lose consciousness very thin and insubstantial marked by temperance in indulgence less than the correct or legal or full amount often deliberately so having little importance intended primarily as entertainment silly or trivial designed for ease of movement or to carry little weight having relatively few calories (of sleep) easily disturbed casual and unrestrained in sexual behavior.*:The English Cooks keep all their Spices in separate boxes, but the French Cooks make a spicey mixture that does not discover a predominancy of any one of the spices over the others.Illuminate as in make lighter or brighter.* 1806, Alexander Hunter, Culina Famulatrix Medicinæ, p.125:.*:The youth discovered a taste for sculpture.(obsolete) To manifest without design to show to exhibit.To find or learn something for the first time.*:they seyde the same, and were aggreed that Sir Clegis, Sir Claryon, and Sir Clement the noble, that they sholde dyscover the woodys, bothe the dalys and the downys.(obsolete) To reconnoitre, explore (an area).*:Prosperity doth best discover ' vice but adversity doth best ' discover virtue.

*:Go, draw aside the curtains, and discover / The several caskets to this noble prince.

(archaic) To reveal (information) to divulge, make known.

(chess) To create by moving a piece out of another piece's line of attack.

(obsolete) To remove the cover from to uncover (a head, building etc.).

Elucidate vs illuminate