The textbook context explicitly identifies slogans (b) and (c). For 'Indira Hatao!', the context states that the opposition alliance (Grand Alliance) had only one common programme: 'Indira Hatao'. For 'Garibi Hatao!', the context clearly attributes this to Indira Gandhi, stating she 'put forward a positive programme captured in the famous slogan: Garibi Hatao' as part of her political strategy. For 'Jai Jawan, Jai Kisan', while not explicitly detailed in the provided context excerpts, this is a standard NCERT identification associated with Lal Bahadur Shastri.