The correct option is
B excellently
In order to fill in the blanks with the most suitable adjective and adverb, let's understand what adjectives and adverbs are.Adjectives are the words that define/explain nouns or pronouns. For example: Roshni is pretty. Here, 'Roshni' is the noun and 'pretty' explains how she is, hence 'pretty' is the adjective.
Adverbs are the words that describe action words (verbs). For example: Ram fought bravely. Here, 'Ram' is the noun and 'fought is the verb. 'Bravely' describes how he fought, hence it is the adverb.
NOTE: We need a word to describe the way he performed. Since 'performed' is a verb, the word that describes it is called an adverb. Hence, we need an adverb to fill in the blank.
Option A - 'Excellent' is an adjective and hence can't be used to fill in the blank. Thus option A is incorrect.
Option C - 'Excel' is a verb (which means to be or do better) and not an adverb. Hence, option B is incorrect.
Option C - 'Excellentfully' is a wrong word. Thus option C is incorrect.
Option D - 'Excellently' is an adverb which can be used to describe how he performed on the Annual day. Hence, option D is the correct answer.
'He performed excellently on the Annual day.'