In the following question, out of the four alternatives, choose the word which best expresses the meaning of the given word and click the button corresponding to it.
In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.
To the whale, its(A)/tail is the sole(B)/mean of propulsion.(C)/No error(D)
In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase. A speech or a presentation made without previous preparation.