Question

look at this dictionary entry.
invariably \in-vair-ee-uh-blee\\ adverb 1. on every occasion: a drought invariably causes concern about the adequacy of the water supply. — from late middle english
which sentence uses the word invariably correctly?
jane austens novels, which are invariably set in england, explore the interactions of characters from different strata of english society.
people invariably get lost in the louvre, the worlds largest museum.

Explanation:

First, confirm the definition of "invariably" means "on every occasion, without exception".

1. For the first sentence: Jane Austen's novels are all set in England, so this matches the "every occasion" meaning.
2. For the second sentence: It is not true that every single person gets lost in the Louvre—many people navigate it without getting lost, so this does not fit the strict "on every occasion" definition.

Answer:

Jane Austen's novels, which are invariably set in England, explore the interactions of characters from different strata of English society.