A. {Rome, Tokyo, Houston, Miami, Toronto, Canada}
What is outcomes of event ?
The possibilities of occurence of any event is called the outcomes of the event.
What are the required outcomes ?
The event A = The place is a city
The event B = The place is in north america
The outcomes of event A are {Rome, Tokyo, Houston, Miami, Toronto}
The outcomes of event B are {Houston, Miami, Toronto, Canada}
The outcomes of event A or B are {Rome, Tokyo, Houston, Miami, Toronto, Canada}
The Option A is correct.
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