Answer:
With this, we can also achieve reduced waste production. Apart from the clearly known sources of pollution, recent times have also seen the negative effects of chemicals, pesticides, radioactive wastes. There are growing concerns about Ozone depletion, global warming, greenhouse effect and climate change.
B is the answer. The subject is Joe and the simple predicate is admitted because that is what Joe did.
I would say b and c, since unfasten and clench are basically antonyms and those answers both have antonyms
C and D i know because my dad owns a Business