Padmini had not rarely missed (1)/ a dance performance or festival since (2)/ she was eight years old. (3)/ No error (4)

Answer

1

Explanation

had rarely/has rarely will replacehadnot rarely because -
the senseofthe sentenceisAffirmative. So. not will not be used.
rarely (Adv.) : not often
Look at the sentences given below:
I.m rarely in town these days.
This method is rarely used in modern laboratories.
Hence, Padmini has/had rarely missed is the right usage