SC problem 1

Added to paul's points,
correctly employed idiom - both X and Y

Dharmin

I thot the answer is D as well. But the given answer is A.

It's baffling why you need an extra "with". it's superfluous?

I think "false doctrine teaching" is not sounding right. teaching false doctrine is much better for sure.

Think you are right.

"false doctrine teaching" does not make sense. You can only teach false doctrine.

OA: A

Why is OA A, and not D or B?
In D: The key here is to notice that doctrine is the object of teaching and should therefore be kept as the object, not as an adjective (or, as we sometimes say, "in attribution").

In other words, we should follow this pattern: PREP + GERUND + OBJECT OF GERUND

Of course a good example will make this rule clearer. Consider the following sentences:
The woman was fired for buying junk.
or
The woman was fired for junk buying.
Here are two more:
After eating lunch, I felt sleepy.
or
After lunch eating, I felt sleepy.

In B: if we don't use with, we would have ambiguity about whether misconduct was parallel with teaching or with doctrine. In other words, it sounds like the president was teaching administrative misconduct!!

Great that it's A.
If it was D, I would have been thoroughly confused!

I too fell for the trap in D. Good explanation BMW.