The jury ___________ been unable to decide yet. A. were B. are C. is D. has​

Select the most appropriate option to substitute the underlined segment in the given sentence. If no substitution is required, select No improvement. The cause of the disaster has not yet known but an enquiry has been set up to find out what happened. (a) have not yet been known (b) No substitution required (c) was not yet known (d) is not yet known

In this question, a sentence has been divided into four parts (A), (B), (C) and (D). Read the sentence to find out whether there is any grammatical error in it. The error if any, will be in one part of the sentence. Mark that part as your answer. If there is no error, the answer is ‘No error’. Ignore the error of punctuation if any. The pictures (A) were painted by hand, (B) and some them (C) were very beautiful. (D)

(a) There has always been / (b) some form of education / (c ) but there has not always been schools. / (d) No error.