anuj4012 wrote:
Can we remove "that" in option A?
If no, how removal of "that" makes it a run-on sentence?
When "that" is removed, there would be two sentences:
1. Salt deposits and moisture threaten....
2. The site of ancient civilization flourished.....
The above two sentences are joined by only a comma without conjunction, thus making this option a run-on sentence.
However when "that" is used, "The site of ancient civilization..." becomes a modifier (say
...
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