______ the desert receives more than four inches of rainfall in a single season, dormant seeds quickly bloom into a colorful "superbloom."
Which choice completes the text so that it conforms to the conventions of Standard English?
- Acheck_circle
When
- B
And
- C
Therefore
- D
However
Explanation
"When" introduces a conditional/temporal dependent clause that precedes the main clause with a comma. The others are coordinating conjunctions or adverbs requiring different structures.