Solution:The correct order of languages spoken in India by speaker strength, from higher to lower as per the Census of India report from 2011, is Gujarati (a), followed by Kannada (b), then Odia (d), Malayalam (c), and finally Punjabi (e). Gujarati and Kannada have substantial speaker populations due to their widespread use in their respective states (Gujarat and Karnataka) and diaspora communities. Odia, the official language of Odisha, also has a significant number of speakers. Malayalam, though primarily spoken in Kerala, has a slightly smaller population of speakers compared to Odia. Punjabi, despite its global diaspora, has fewer speakers within India compared to the others listed, as its spread is more concentrated in the state of Punjab and certain parts of neighbouring states.