Please validate if i have understood it correctly
So that ,ideally, should introduce a new subject
But if new subject is not introduced and if a pronoun is used, instead, and if pronoun matches the subject of the sentence than by default the pronoun stands for the subject
Julian studied hard so that she could get a good grade.
She = Julian
New equipment and other improvements reduced the amount of time"”from eleven hours in 1982 to six in 1988"”needed by workers so that they could produce a ton of steel
they, thus owing to its placement, refers to New equipment and other improvements
and not to workers
and therefore the following meaning
.Ron:
that interpretation implies that "new equipment" is capable of formulating a goal, and of taking actions toward that goal
In Contrast,
To verb goes back to subject of the previous action
previous action is needed; its subject is workers
Perfect!
Thus, D is in and A is out.
Is my understanding correct?
Thanks
Have a cheerful day