In each of the following questions, choose the pair that correctly shows the singular and plural forms of the noun. Which of the given pairs denotes the correct singular–plural combination?

Explanation:
·         Option A: indicator → indicators (The plural form adds a simple –s. The word indicatrices is an incorrect Latinate form for this term). ·         Option B (Correct): crisis → crises (Nouns ending in –is derived from Greek change –is to –es in the plural). ·         Option C: policy → policies (Nouns ending in a consonant + y change the y to –ies, not –yes). ·         Option D: datum → data (The plural of datum is data, not datae). ·         Option E: standard → standards (The regular plural ending –s is missing).