In the question given below, a sentence is given, divided into parts. One of the parts may contain an error. Identify the part that contains the error, and mark it as the answer. Ignore errors of punctuation. In case the sentence is correct as it is, mark option (4), that is, 'No error'.The government has been taking several measures to enhance the growth of the economy, which includes reducing taxes on the lower-income groups, and improving infrastructure.