Correct option is B
Sol. MMR is defined as the number of maternal deaths per 100,000 live births in a given year. Explanation of each option: ● (a) Total females – Not relevant to maternal mortality calculation. ● (b) Live births – Correct answer. Standard denominator for MMR calculation. ● (c) Reproductive age group – Used for other indicators, not MMR. ● (d) Total population – Not specific enough for maternal mortality statistics.