How can l move the subordinate clause to the beginning of the sentence? “ Clothes that are too worn to be sold can be shredded and reprocessed into new items.”

?!  This sentence has no subordinate clause. In fact, it lacks a subordinating conjunction.

Explanation:

Do note that it IS possible to rewrite this sentence to CREATE a subordinating clause, but there is no subordinate clause that can be moved -- based on the sentence you have provided.

Some examples:

After clothes become too worn to be sold, they can be shredded and reprocessed into new items.

Whenever clothes become too worn to be sold, they can be shredded and reprocessed into new items.

Once clothes become too worn to be sold, they can be shredded and reprocessed into new items.

From this excerpt, we can conclude that the best option to answer is the last one Antigone refuses to allow Creon to believe that Ismene is as brave as she is. This reveals the universal theme that pride goes before a fall.

We can notice Antigona's pride in the last words she said, showing she thinks she deserves what she is having but she won't give it up for her sister. She doesn't wanna Creon to think her sister is braver than her, and puts it in evidence.