The set of propositions which was discussed by the panel have been published in the society journal.
A. which was discussed by the panel
have been.
The set has been...B. which
were discussed by the panel
have been
C.
that was discussed by the panel has been.
Perfect matchD. which
were discussed by the panel has been
E. which was discussed, by the panel, has been.
For this to be correct, there should have been a comma before which and after panel.Which vs That.. (from grammar girl)A restrictive clause is just part of a sentence that you can't get rid of because it specifically restricts some other part of the sentence. Here's an example:
Gems that sparkle often elicit forgiveness.The words that sparkle restrict the kind of gems you're talking about. Without them, the meaning of the sentence would change. Without them, you'd be saying that all gems elicit forgiveness, not just the gems that sparkle. (And note that you don't need commas around the words that sparkle.)
Nonrestrictive Clause--WhichA nonrestrictive clause is something that can be left off without changing the meaning of the sentence. You can think of a nonrestrictive clause as simply additional information. Here's an example:
Diamonds, which are expensive, often elicit forgiveness.Alas, in the world, diamonds are always expensive, so leaving out the words which are expensive doesn't change the meaning of the sentence.