D .)''all true believers shall break their eggs at the convenient end''.
The answer you are looking for is, irregular.
I think it is either A or B... I'm not sure between the two, but at least I narrowed it down to those options. Hope this helps you a bit :)
The sentence above with the use of the correct word becomes:
<span>Mr. Winston (B.) brought up the subject during the meeting; even though it made everybody uncomfortable to talk about it.
To bring up a topic means to make it open for discussion.
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To kill King Duncan whilst he is sleeping late at night.