Please make sure that you are copying the questions correctly. In option E, the question as stated on the web page is missing a comma before 'and'. The original question states (E) and financial advice, and by staying.

This typo could take a few people of' as it did in my case...as the rule states that when a conjunction joins two items and the first item has sub items, then a comma comes before the joining conjunction. Summarily, one needs to close the old series with a comma before opening a new one.

If you are point to comma as a error that probably you are wrong. If there are two legnthy parts connected with co-ordinate conjunction, you can use comma before conjunction.

Skywalker18

please help with the correct reasoning for eliminating (D)

taking an example : by eating healthy and sleeping well, I maintain my health.


or is it related wrong use of comma in (D)

Hi Saksham, this example is not similar to the construct in the sentence under consideration.

The sentence under consideration is similar to the following:

By eating apples, oranges, and mangoes and by sleeping well, I maintain my health.

So, at a macro level, the sentence is conveying:

By eating...and by sleeping well, I maintain my health.

So clearly, I maintain my health by doing two things:
i) By eating
ia) apples,
ib) oranges, and
ic) mangoes

and

ii) By sleeping well

If we don't have the second by, the sentence would be:

By eating apples, oranges, and mangoes and sleeping well, I maintain my health.

At the very least, there is confusion in interpretation, because the sentence could be interpreted as:

I maintain my health:
i) By eating
ia) apples,
ib) oranges, and
ic) mangoes and
id) sleeping well

Absurd interpretation, but nonetheless, the construct is not as lucid as it is, if we repeat the by second time.
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