Question

The pronoun I is capitalized even when it’s part of a

Answer 1

I would say the correct answer here is a contraction.

Answer 2

The pronoun I is capitalized even when it's part of a CONTRACTION.

Explanation:

A contraction is a process applied to make an expression shorter. Among the speakers of any given language, there is a necessity of speaking fast. In linguistics, this phenomenon is referred to as the language economy.

However, in writing, the pronoun "I" is always capitalized, even when using contractions.