I think all are giving strange reasoning for elimination .
I have the use of IF THEN clause . So let me put my POE.
First I feel you should know how to use IF THEN .
IF + present tense , THEN + simple present tense (is) / future tense (maybe ,will be)
IF + past tense , THEN + simple past tense(was) / WOULD (to show uncertainty)
IF + past perfect tense (HAD+VERB), THEN + would have
ABOVE ALL CONDITIONAL WOULD - If you see uncertainty ,HYPOTHETICAL CONDITION ,assumption.
Now lets begin POE.
"alchemist009"]Despite the criticism in the early 1890’s
that if journalists use pictures the intellectual quality of publications would diminish, by the late 1890’s photographs were found in most newspapers and magazines.
(A) that if journalists use pictures the intellectual quality of publications would diminish, (use - simple present tense+ would IS WRONG , so eliminate . WE KNOW THE SECOND CLAUSE IS IN PAST .)
(B) that if journalists use pictures it will diminish the intellectual quality of publications, (use + will is fine as per grammar point of view but WHAT IS "IT" referring to ? moreover the focus is on use of pictures by journalists not if journalists use, so it has little meaning error too. )
(C) that the use of pictures by journalists would diminish the intellectual quality of publications, (now there is no IF so I can easily use CONDITIONAL WOULD logic as the second clause is in past)
(D) of the intellectual quality of publications being diminished by the use of pictures by journalists, (official explanation -preposition of and by are confusing )
(E) of the use of pictures by journalists diminish the intellectual quality of publications,(official explanation - complete nonsensical and misplacement of journalists diminish ...)