what grammatical name is given to the expression what made her choose me.

"What made her choose me?"

is an interrogative sentence,
otherwise known as a question.

you don't provide answer to my question you are not reliably

What grammatical name is "What made her choose me ..."

The grammatical name given to the expression "what made her choose me" is a noun clause.

Now, let's break down the structure of this noun clause:

1. "what" is a pronoun acting as the subject of the noun clause.
2. "made" is the main verb of the noun clause.
3. "her" is a pronoun acting as the direct object of the verb "made."
4. "choose" is the infinitive verb form acting as the object of the verb "made."
5. "me" is a pronoun acting as the direct object of the verb "choose."

To identify the grammatical name of an expression like this, it helps to identify its role within the sentence and understand its structure. In this case, "what made her choose me" functions as a noun phrase and acts as the direct object of the sentence.