Answer:
Add a comma after "environmentalism".
Explanation:
Punctuation is the most important part of a sentence. any misplacement or elimination of punctuation marks can change the entire meaning of a sentence.
In the given sentence, the grammatical error is in the punctuation mark. A comma (,) should be placed after the word "environmentalism."
So, the sentence with the correct punctuation mark would be:
"Henry David Thoreau, often known as the father of environmentalism, wrote the book entitled Walden."
The comma is placed after the word "environmentalism" because the phrase "often known as the father of environmentalism" is a modifier.
So, the correct answer is the last option.
Answer:
Add a comma after "environmentalism".
Explanation:
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