The question requires identifying the individual who received the Rashtriya Vigyan Puraskar 2025 in the 'Vigyan Ratna' category posthumously.
Based on the provided options and the designated correct answer, Jayant Vishnu Narlikar is identified as the recipient for this specific award and category, stated to be posthumous.
Therefore, option B is the correct choice according to the question's premise.
In 2020, which of the following tiger reserves won the ‘TX2 Award’ for its efforts to increase the tiger population?
Which of the following is an award for contribution in the field of science and technology?
Who among the following was selected for the inaugural Chhattisgarh Veerni Award in April 2021?
Which of the following countries’ former Prime Minister was awarded with the Padma Vibhushan award in 2021?
Who among the following is a Padma Vibhushan awardee of 2021?