Final answer:
The combined sentence with a relative clause is: "Ann Curry, who is a television journalist, was rescued by Boy Scout Troop 368 when she broke her ankle while hiking in New York's Harriman State Park in April 2014."
Step-by-step explanation:
The combined sentence using a relative clause is: "Ann Curry, who is a television journalist, was rescued by Boy Scout Troop 368 when she broke her ankle while hiking in New York's Harriman State Park in April 2014."
In this sentence, the relative clause 'who is a television journalist' provides additional information about Ann Curry. Relative clauses are dependent clauses that describe or give more information about the noun preceding them. In this case, the relative clause is non-restrictive, meaning it adds extra information to the sentence that isn't essential for identifying the subject.
The sentence can be combined by completing the relative clause like this: Ann Curry, who was rescued by Boy Scout Troop 368 when she broke her ankle while hiking in New York's Harriman State Park, is a television journalist.