The employee did not out anyone as the main cause of his resignation, but he did reasons why he found the workplace unpleasant.

a.
insulate; single

b.
single; enumerate

c.
enumerate; insulate

d.
single; insulate

The correct answer is B:  single; enumerate

Explanation:

Single out someone means select or choose someone for some special intention. It's a phrasal verb we use to choose a person for a certain purpose.

For example: Sarah was singled out as the best student of the year.  

In our context, it means that the employee did not name/appoint anybody as the main source of his resignation; that is, he didn't blame anyone for his resignation.

Enumerate reasons refers to naming things separately, which means one by one. This could also include a list of things or reasons somebody considers important for a certain purpose.

In our case, it refers to the list of reasons that the employee listed to indicate why he found the workplace unpleasant.

On the other hand, we use the verb insulate to refer to covering something with a certain material to stop heat, sound, cold, or electricity from entering or leaving.

For example: We can give you the best tips on how to isolate your home for winter.

source text: from the sketch here given it will be seen, that our good grandmothers differed considerably in their ideas of a fine figure, from their scantily dressed descendants of the present day. a fine lady, in those times, waddled under more clothes even on a fair summer's day, than would have clad the whole bevy of a modern ball room. nor were they the less admired by the gentlemen in consequence thereof. on the contrary, the greatness of a lover's passion seemed to increase in proportion to the magnitude of its object—and a voluminous damsel, arrayed in a dozen of petticoats, was declared by a low-dutch sonnetteer of the province, to be radiant as a sunflower, and luxuriant as a full blown cabbage. certain it is, that in those days, the heart of a lover could not contain more than one lady at a time; whereas the heart of a modern gallant has often room enough to accommodate half a dozen - - the reason of which i conclude to be, either that the hearts of the gentlemen have grown larger, or the persons of the ladies smaller — this however is a question for physiologists to determine. add punctuation to the following excerpt. writing under the name of diedrich knickerbocker washington irving aimed his potent satire at as diverse topics as political rivals such as thomas jefferson to the very ideal of looking back on the past affectionately: a fine lady, in those times, waddled under more clothes even on a fair summer's day, than would have clad the whole bevy of a modern ball room. a voluminous damsel, arrayed in a dozen of petticoats, was declared by a low-dutch sonnetteer of the province, to be radiant as a sunflower, and luxuriant as a full blown cabbage. in those days, the heart of a lover could not contain more than one lady at a time; whereas the heart of a modern gallant has often room enough to accommodate half a dozen

the third answer

explanation:

because