You have to change the word that underlined to a better sounding word from the side, they have answers for you
The first sentence in the first paragraph plus the rest of the paragraph makes A WRONG.
The last sentence in paragraph 3 makes answer choice B WRONG.
Second to last sentence in the second paragraph makes answer choice C RIGHT.
In the article last two paragraphs it talks about disagreement over whether or not vegan far is "better" but never stated their ways better therefore making D WRONG.
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C - use fertilizers made from plants.
Tone is created by effect and imagination. Hope this helps :)
Answer:
cause at that time almost everything was natural nothing was a mixture of anything but now we don't know weather the thing is natural or not or is it mixed with something else also
for eg in earlier times fruits were grown naturally but now they r being injected to grow faster which is not natural and might cause us problems in future but the ppl in past didn't
