Identify the grammatically correct form of the given sentence.
Sentence: My father is not only intelligent, yet he also has a wide range of expertise.
I. My father is not only intelligent, but he also has a wide range of expertise.
II. My father is not intelligent only, also but he has a wide range of expertise.
III. My father is nor intelligent only, but also he has a wide range of expertise.

Correct option is C

The correct sentence is only I.
Explanation:
· Sentence I correctly uses the correlative conjunction “not only... but also” which is used to show parallel structure in compound sentences.
· Sentence II and III are grammatically incorrect in word order and structure.
Grammatical rule used:
Correlative Conjunction Rule – “not only... but also” should be used to join two parallel elements.
Example: She not only dances but also sings.
�� Information Booster: Always maintain parallelism in parts connected by correlative conjunctions.