Final answer:
The compound-complex sentence from the passage is: 'They planned to start over by growing corn in America, so they took what they knew with them.'
Step-by-step explanation:
A compound-complex sentence is a sentence that consists of at least two independent clauses and one or more dependent clauses. Based on the given options, the sentence that is a compound-complex sentence is:
They planned to start over by growing corn in America, so they took what they knew with them.
This sentence contains two independent clauses 'They planned to start over by growing corn in America' and 'they took what they knew with them,' connected by the coordinating conjunction 'so.' Additionally, it also contains one dependent clause 'by growing corn in America.'