Which of the following sentences is correct?

Identify the erroneous part of the sentence given below:

Pick out the correct sentence from the following sentences.

Which of the following sentences is correct?

One of the parts of the following sentance an error. Identify that part from the given options.

'Mr. Gupta, our Chairman, accompanied by his secretary have arrived at the office.'

In the following sentence, find out which part of the sentence has an error and select the appropriate option:

"The patient died / despite he had received / the best medical help / from the hospital staff."

Pick out the part of the sentence which has an error. If there is no error mark ‘4’.
A) A white rhinocerous
B) is close
C) to extinction