Option 3 : Both Statement I and Statement II together are not sufficient to answer the question
The logic follows here is:
Given: On which day was Adit born?
Given statements:
Statement I: Adit was born on a weekend → This statement don’t prove that Adit born which day.
Statement II: Adit’s brother was born on the 3rd day of a week → this statement also not prove that which day adit born because in this statement talk about adit brother not talk about adit.
Moreover, both statements together are also not sufficient to prove that adit born day
Hence the correct answer is “Both Statement I and Statement II together are not sufficient to answer the question”