Solution:Tolkāppiyam is the name of the most ancient extant Tamil grammar text. The surviving manuscripts of the Tolkappiyam consist of three books, each with nine chapters, with a cumulative total of 1,612 sutras in the nūrpā meter.It is a comprehensive text on grammar and includes sutras on orthography, phonology, etymology, morphology, semantics, prosody, sentence structure and the significance of context in language. Some in the Tamil tradition place the text in the mythical second Sangam, variously in the 1st millennium BCE or earlier. Therefore, option (b) is correct.