The correct answer is (a) Mahendra Nath Singh.
Satyam Shivam Sundaram is a famous painting by Mahendra Nath Singh. It is a large oil painting on canvas, measuring 240 x 180 cm. The painting was completed in 1948 and is currently on display at the National Gallery of Modern Art in New Delhi.
The painting depicts a group of three figures, representing the Hindu trinity of Brahma, Vishnu, and Shiva. The figures are seated in a meditative pose on a lotus flower. The background of the painting is a dark blue sky with stars.
The painting is considered to be one of the most important works of modern Indian art. It is a powerful and moving depiction of the Hindu trinity, and it has been praised for its beauty and its spiritual significance.
The other options are incorrect.
(b) Nandkishore Sharma was a 19th-century Indian painter. He is best known for his portraits of Indian royalty and his landscapes.
(c) Shivnandan Nautiyal was a 20th-century Indian painter. He is best known for his paintings of the Himalayas.
(d) Vishwanath Mehta was a 20th-century Indian painter. He is best known for his paintings of Indian village life.