A nationwide survery has brought up an (a)/ interesting finding (b)/ regarding infant mortailty rate in India. ©/ No error (d)

Read each sentence to find out whether there is any grammatical error or idiomatic error in It. The error, if any will be In one part of the sentence. The number of that part is the answer. If there is no error, the answer is ( e ). (Ignore errors punctuation, If any). Experts believe that a (a)/ gradually decreasing Infant mortality rate (b)/ is lead to a proportionate (c)/ decrease In the size of our brains. (d)/ No error (e).

Find the error. Care has been taken/(A) to ensure safety and security /(B) of the participants in the event/(C) .No error/(D).