Correct Answer: A collection of historical documents or records

Solution : The correct choice is the fourth option.

An archive refers to a place where historical documents, records, or valuable artefacts are stored for preservation and reference. In the context of the sentence, the museum's archive is a location where valuable historical items like ancient manuscripts are kept for study and display.

The meanings of the other options are as follows:

• A collection of essays : This refers to a gathering of written pieces or compositions, often exploring various topics or themes.
• A room to store lots of books : This describes a place primarily designed for storing a large number of books or texts, commonly known as a library.
• A room to store important official documents : This suggests a space dedicated specifically to storing significant official paperwork or documents, typically associated with administrative or organisational use.