Concept:
The Henley Passport Index ranks countries based on the number of destinations their passport holders can visit without a prior visa.
• Higher rank means stronger passport.
• It is updated regularly.
• Based on visa-free access.
Step 1: Understand what the Henley Passport Index measures.
It evaluates:
Global travel freedom of passports
based on visa-free access.
Step 2: Recall the 2026 top rank.
In 2026, the top country was:
Singapore
marking its third consecutive time.
Step 3: Compare with options.
• England -- incorrect
• Sri Lanka -- incorrect
• Singapore -- correct
• India -- lower rank
Step 4: Final conclusion.
Hence, the correct answer is:
\[
\boxed{\text{Singapore}}
\]