English usage — comparison idiom ("so … as"): Replace the incorrect comparative marker to improve the sentence. Original sentence: "For many centuries in Indian history there was no city so famous like the city of Ujjain." Choose the option that yields the correct comparative expression.

Given data

• Pattern used: "no city so famous like …"
• Context: negative comparison ("no city …").

Concept/Approach
After a negative, standard English prefers the idiom so + adjective + as rather than "as … as". Therefore, we need "so famous as".

Option analysis
A. "as" → gives "so famous as" → correct. ✔B. "such as" → introduces examples, not a comparison.C/D → incorrect phraseology.E → original "so famous like" is nonstandard.

Corrected sentence
"… there was no city so famous as the city of Ujjain."

Final Answer
as