This is the 25th most frequent Chinese word.
个
A general measure word in Chinese.
一个 is a common quantifier usage where '个' is a measure word for countable singular items, used here to count '苹果'.
我有一个苹果。
I have an apple.
一个 is used with the adjective phrase '好机会,' meaning 'a good opportunity,' indicating a singular instance.
这是一个好机会。
This is a good opportunity.
一个 is paired with the noun phrase '非常有才华的人,' serving as a general measure word introducing the singular identity.