Q: Determine the topic of the passage. "On June 30, 1970, the Reds hosted the Atlanta Braves in their grand opening, with Hank Aaron hitting the first ever home run at Riverfront." Topic:
A: Riverfront Stadium

Q: Determine the topic of the passage. "In photography , bracketing is the general technique of taking several shots of the same subject using different camera settings." Topic:
A: Bracketing

Q: Determine the topic of the passage. "Browser extension , which modifies the interface and/or behavior of web browsers" Topic:
A: Add-on

Q: Determine the topic of the passage. "The definition of the world's busiest airport has been specified by the Airports Council International in Geneva, Switzerland." Topic:
A:
World's busiest airport