Directions: Each item in this section has a sentence with three underlined parts labelled as (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part and indicate your response. on the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d). 

While renewable energy sources like solar and wind have been gained significant traction,(A)/ there is still a need for reliable(B)/ and efficient energy storage solutions.(C)/ No error(D)