Buoyed by a sharp rise in new-business-growth, India's service sector activity expanded to a five-month high in December boosting growth of output and employment, and supporting an uptick in business confidence, a-private-survey showed on Monday. The IHS Markit India Services Business Activity Index improved from 52.7 in November to 53.3 in December, highlighting the second-strongest-rate of increase in output in over a year(behind July).