Dr. A.P.J. Abdul Kalam played a crucial role in the development of India's missile and aerospace technology.
He was associated with major missile projects such as:
• Agni Missile Programme
• Prithvi Missile Programme
• Integrated Guided Missile Development Programme (IGMDP)
Due to his remarkable contribution to India's defence and strategic missile capabilities, he became popularly known as the “Missile Man of India.”
Later, he served as the 11th President of India and was widely respected for his vision, simplicity, and dedication to science and education.
Therefore,
\[
\boxed{\text{Dr. A.P.J. Abdul Kalam}}
\]
is the correct answer.
Hence,
\[
\boxed{(A)}
\]