The correct answer is: D. National Science Day (India)
National Science Day is celebrated in India on 3 May every year to commemorate the discovery of the Raman Effect by Indian physicist Sir Chandrasekhara Venkata Raman on 28 February 1928. The Raman Effect is the scattering of light by a substance, and the change in the wavelength of the scattered light as a result of the interaction with the substance. Raman was awarded the Nobel Prize in Physics in 1930 for his discovery.
World Sleep Day is celebrated on 18 March every year to raise awareness of sleep disorders and the importance of sleep for human health.
International Women’s Day is celebrated on 8 March every year to commemorate the achievements of women and to promote gender equality.
World Press Freedom Day is celebrated on 3 May every year to celebrate the fundamental principles of press freedom and to defend the media from attacks on their independence.