Read each of the following four sentences to find out whether there is any grammatical mistake/ error in it. Choose the sentence with no grammatical error as the correct answer. If all of the given sentences are grammatically incorrect, mark ( e ) as an answer.
(a) John Wanamaker, founder of the stores that bear his name, once confessed, learnt 30 year ago that it is foolish to scold.
(b) Whenther rich or poor, American or Indian, we all have the same emotions deep with us.
(c) This research indicate that we can no longer avoid significant warning during this century.
(d) Every modern society depends on the trust in the skills and ethics of variety of insitutions such as schools and colleges, hospital and markets.
(e) None of these

Answer

e

Explanation

None of these