What the complete subject of this sentence The transparent plastic crate held all her photos and letter?

The complete subject of the sentence "The transparent plastic crate held all her photos and letters" is The transparent plastic crate.

Here's why:

* Subject: The subject is the noun or pronoun that performs the action of the verb. In this case, the crate is doing the holding.

* Complete Subject: The complete subject includes the subject and any modifiers that describe it. "The transparent plastic crate" is a complete subject because it includes the subject (crate) and the modifiers (transparent, plastic).