Answer:
d.many companies should rethink how they package and ship items.
Step-by-step explanation:
The intent of the whole passage is to make the readers understand how huge amount of papers for packages and boxes are used needlessly just to ship a small item ordered over the internet.
The sentence that the auther would most likely agree with would be "many companies should rethink how they package and ship items.". This is clearly evident from the fact that he does not support needless use of papers or big boxes for packaging small items. He even suggests the consumers to complain to the companies that ship small things in large packages.