Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

a. He became one of the most renowned theoretical physicists in the world despite the challenges of his illness.
b. Stephen Hawking, diagnosed with ALS at the age of 21, defied the odds.
c. His groundbreaking work on black holes and the universe earned him global respect.
d. What makes his story truly admirable is not only his intellectual achievements but also his determination to continue contributing to science despite being confined to a wheelchair for most of his life.
e. His life reminds us that physical limitations do not define one's capabilities.