To identify who is guaranteed the freedom of speech and expression under Article 19(1)(a):
1. Article 19(1)(a) of the Indian Constitution guarantees the freedom of speech and expression to all citizens of India.
2. This right is fundamental to the democratic framework of the country.
3. The other options incorrectly extend or limit this right beyond what is constitutionally provided.
Therefore, the correct answer is (1) All citizens of India.