The difference between the present reservoir, with its silent sterile shores and debris-choked side canyons, and the original Glen Canyon, is the difference between death and life. Glen Canyon was alive. Lake Powell is a graveyard. Which phrase best contributes to the author's sad tone?

"debris-choked".

Explanation:

In the given passage, the speaker/ author presents the difference between the Glen Canyon and Lake Powell. This contrasting image/ description is made in such a way that the difference is felt and projects a drastic image.

The comparison of these reservoirs is so drastic that the author uses life and death to compare it. While "Glen Canyon was alive. Lake Powell is a graveyard." And the one phrase that best contributes to the author's sad tone is "debris-choked", which presents an image of a place that is dying, or on the verge of death.

the illustration   that would give a reader a clear understanding of the text is a picture of men constructing the frame of a building.the frame is made of iron bars. the text describes the job of blacksmiths'. these were very organised and they had different names: "the driver" and "the heater". the text describes the way in which these men worked ; they worked iron pieces as if they were playing a sport. in fact, the text wants to show the men's skills. the text also puts some emphasis on the use of '' rivets'' in construction. this kind of nails were not always used in the construction of manhattan.

some examples:

"and with an underhand toss he hurled the smoking rivet straight at the catcher, who caught it in mid-air in his catching can." men's skills

"when the driver was ready for a new " the emphasis on the rivet ( special nail used in construction).

" it against a beam to remove any cinders, and jammed it into the waiting hole. " the emphasis on the rivet.

ma”am had a granddaughter who lived a couple blocks away from her school who later on then met friends