Underline the subject in the following sentence: Ninety five percent of an individual's life is determined by his birth and death.
(B) Ninety-five percent of an individual's life
Ninety-five percent of an individual’s life
In the given sentence option (B) is the subject of the sentence. Option (A) is only part of what is being talked about, option (C) is the object to the preposition by, the phrase given in option (D) is the predicate of the sentence because it talks about the subject.
Hence, the correct option is (B)