What has the highest threshold?? A.) A luxury automobile
B.) A refrigerator
C.) A gallon of gasoline
D.) A television
E.) A mattress

It would have to be A

Answer: the philippines has suffered from an inexhaustible number of deadly typhoons, earthquakes, volcano eruptions and other natural disasters. this is due to its location along the ring of fire, or typhoon belt – a large pacific ocean region where many of earth's volcanic eruptions and earthquakes occur.

5×^2+20-15 or -(5x^2-20+15)