Tibetan rugs are so expensive because
the weaver still pursues his art as they have for centuries, by hand-dyeing all their wool and then knotting each thread individually to achieve a unique pattern for each piece.
--in the non-underlined part
their ---indicates that plural
weavers are correct (their refers to weavers)
(A)
the weaver still pursues his art as they have
pronoun disagreement---their does not agree with the singular weaver
(B)
the weaver still pursues his art as he has
pronoun disagreement---their does not agree with the singular weaver
(C)
weavers still pursue their art as
they havehere weavers agree with their---correct comparison (
weavers still pursue..as
they have---weavers to weavers)
use of present perfect is correct here to express the continuity
(correct)(D) weavers still pursue their art as
was doneincorrect comparison--
weavers are compared to what
was done and use of past tense is wrong here
(E)
the weaver still pursues his art as has been done
pronoun disagreement---their does not agree with the singular weaver