The correct answer is: B. no article, the
Rohit's grandfather doesn't watch TV a lot while he is always seen using the internet.
The word "TV" is a common noun, which means that it refers to a general class of things. In this case, it refers to the television as a whole. Common nouns are not usually preceded by articles.
The word "internet" is a proper noun, which means that it refers to a specific thing. In this case, it refers to the global system of interconnected computer networks. Proper nouns are always preceded by articles.
In this sentence, the word "TV" is used in a general sense, to refer to the television as a whole. The word "internet" is used in a specific sense, to refer to the global system of interconnected computer networks. Therefore, the correct article to use is "no article" before "TV" and "the" before "internet."
