Concept:The Hajj begins when a pilgrim enters a special sacred state known as Ihram.
Explanation:Before performing Hajj, a pilgrim must purify and dedicate themselves by entering Ihram.
Ihram means the sacred state of pilgrimage with special dress and intentions.
This state is entered at the boundary known as Miqat before reaching Mecca.
Among the given options, Ihram is the state itself, while Tawaf, Sa'y, and Talbiyyah are acts performed later.
Answer:The correct answer is B. Ihram.