Concept:This question tests awareness of recent winners of the Indira Gandhi Peace Prize.Explanation:Sir David Attenborough was awarded the Indira Gandhi Peace Prize for the year 2019.He is an English broadcaster and natural historian.He is known for writing and presenting programmes for the BBC Natural History Unit.His work raised global awareness about preserving and protecting the biodiversity of the planet.Therefore, the correct option is D.Answer:D. David Attenborough