Concept:The phrase refers to the title used for the early successors of Prophet Muhammad.
Explanation:"Khulafa" is the plural of "Khalifa", meaning successor or caliph.
"Rashidun" means "rightly guided".
So "Khulafahar Rashidun" means "The Rightly Guided Caliphs".
It refers to Abu Bakr, Umar, Uthman and Ali.
Thus, the correct option is D.
Answer:D. The rightly guided Khalifa