Concept:The slogan “Jai Jawan, Jai Kisan” was given by Lal Bahadur Shastri, and later “Jai Vigyan” was added by Atal Bihari Vajpayee.Explanation:Lal Bahadur Shastri coined “Jai Jawan, Jai Kisan” to honour soldiers and farmers.Atal Bihari Vajpayee expanded it to “Jai Jawan, Jai Kisan, Jai Vigyan” to emphasise the importance of science and technology in national development.Answer:Atal Bihari Vajpayee