Answer:
into
Step-by-step explanation:
A preposition can be defined as a word that shows or illustrates the relationship between a pronoun or noun and other words in a sentence. Some examples of a preposition is up, below, after, by, against, for, over, into, etc.
The most appropriate word among the answer choices to fill in the blank is "into" because when combined with come or came, it connotes inheriting wealth from someone.
Therefore, the complete sentence is "He came into a large inheritance when he was quite young."