Sentence Correction

Hi there,

I would like to know how to proceed in order to resolve this SC :

Archeologists in Egypt have excavated a 5,000-year-old wooden hull that is the earliest surviving example of a « built » boatin other words, a boat constructed out of planks fitted togetherand that thus represents a major advance, in terms of boat-building technology, over the dugout logs and reed vessels of more ancient vintage.

(A) togetherand that thus represents
(B) together that was representing
(C) together, and it represents
(D) together to represent
(E) togetherand this has represented

Archeologists in Egypt have excavated a 5,000-year-old wooden hull that is the earliest surviving example of a « built » boatin other words, a boat constructed out of planks fitted togetherand that thus represents a major advance, in terms of boat-building technology, over the dugout logs and reed vessels of more ancient vintage.

(A) togetherand that thus represents
(B) together that was representing
(C) together, and it represents
(D) together to represent
(E) togetherand this has represented

I think C wats the ans?

explanation please

answer is A. Here we are talking about the technology and not the boat. In C 'it' incorrectly refers to boat

The question has a --(DASH) which has not been represented properly here. It's either that or I could not see it properly. DASHes in this question are the most important aspect to decide the answer.

Hence, checkout this link for a nice explanation to this question:
https://www.manhattangmat.com/forums/arc ... t1911.html

the right answer is A