Please solve question 6

Question 6 (10 points) What kind of conic section would you use to : (Choose the best answer in each case. There is no penalty for guessing.) Make it appear that a signal sent from one focus came from another focus? 1_ hyperbola Send light out from a 2 ellipse source in one direction, in ' parallel beams? 3_ circle v Reflect sound from one _ - _ focus to another focus? 4- Intersectmg lines v Reflect a signal back to its 5- parabola source? 6_ point v Concentrate incoming sound to a single point