Question

add a comma or semicolon if needed. otherwise, submit the text without any additional punctuation.
before ms. crosby saw the bitterroot national forest she had no idea how stunning the landscape is in idaho.

Explanation:

Step1: Analyze the sentence structure

The sentence has two independent clauses: "Before Ms. Crosby saw the Bitterroot National Forest" (a dependent clause acting as an adverbial phrase) and "she had no idea how stunning the landscape is in Idaho". Wait, actually, "Before Ms. Crosby saw the Bitterroot National Forest" is a dependent clause, and the main clause is "she had no idea how stunning the landscape is in Idaho". When a dependent clause (like a prepositional phrase acting as an adverbial clause here) comes before the main clause, we use a comma to separate them. Wait, no, "Before Ms. Crosby saw the Bitterroot National Forest" is a subordinate clause (adverbial clause of time) and the main clause is "she had no idea...". So when the subordinate clause comes before the main clause, we put a comma after the subordinate clause. Wait, the original sentence is "Before Ms. Crosby saw the Bitterroot National Forest she had no idea...", so we need to add a comma after "Forest" to separate the subordinate clause from the main clause.

Step2: Add the comma

So the corrected sentence is: "Before Ms. Crosby saw the Bitterroot National Forest, she had no idea how stunning the landscape is in Idaho."

Answer:

Before Ms. Crosby saw the Bitterroot National Forest, she had no idea how stunning the landscape is in Idaho.