- Statement 1: Drones are promoted for precision spraying of insecticides, pesticides, weedicides, and nutrients in agricultural fields. - Statement 2: Drones are used for surveying and mapping agricultural land, facilitating the digitisation of land records. - Statement 3: Drones are employed for monitoring crop health, assessing damage, and estimating yields, which falls under crop assessment. - All three statements describe valid applications of 'Kisan Drones'. However, the provided options do not include the combination '1, 2 and 3'. Option B combining statements 2 and 3 (land records digitization and crop assessment) represents a plausible grouping of data-centric applications of drones in agriculture.