In 1887, the Royal Society, London gave the Davy Medal for the ‘discovery of the periodic law of chemical elements to ____________.

Correct option is D

The correct answer is (d), John Alexander Reina Newlands.
In 1863, Newlands arranged the elements in order of increasing atomic weight and noticed that every eighth element had similar properties. He called this the "Law of Octaves" and compared it to the octaves in music. His work was not well-received by the scientific community at the time, but it was later recognized as an important step in the development of the periodic table.
In 1887, the Royal Society awarded Newlands the Davy Medal for his work on the periodic law of chemical elements.