Dónde vs donde

Question

No sé ________ he puesto las llaves del coche.

The answer insisted on dónde, but there is no question being asked here. So I do not see the reasoning. The rest of the sentence could easily be considered (actually is) the major clause: "I don't know" I think your answer is wrong, or at best an alternative.

Answer

Hi there Marc ...No, "dónde" is indeed correct. Whenever it relates [or refers] to a question, then the accent is definitely required. Here, part of the same scenario could well involve you saying to yourself: "Where have I put the keys to the car?"This^ same rule applies to other interrogative pronouns, e.g., qué, cómo, cuándo and others.

Answer

What does "relate to a question" mean? "Where have I put the keys" is a question; "I don't know where I put the keys" is a statement. I'm supposed to guess "scenarios?" Whatever they are.

Why aren't both forms correct?

Answer

If you can compose a question which is relevant to [or describes] the situation being portrayed by the statement, then the accent is required in the statement.

Answer

Hola Marcthis is an indirect interrogative sentence that takes the form of a statement but it has a question inside. It's the same in English, you can also make indirect questions by starting the sentence with for example:I wonder when the train will arrive.I'd like to know how you did it. She was asking why I was so rude.You can see the questions inside those, although there is a change in the placement of the verbs in English, but they work the same way as in Spanish. They are also indirect questions. Saludos