Choose the sentence which has a grammatical error in it. Ignore errors of punctuation, if any. If all the sentences are error-free, choose option 5- None of these as your answer.
1
Global warming has its adverse effect on the environment, humans as well as animals.
2
The investors they have been aggressive in buying physical gold to cushion falling stock prices.
3
Cardiovascular diseases have become the part and parcel of life of obese people.
4
The reason we are emphasizing so much when it comes to eradicating social issues is that it can put our future in grave trouble.
5
None of these