OE
The slipstream allows a racecar to “win the race by taking advantage of reduced wind resistance.” In other words, the trailing car would be able to go faster than the car in front of it, and therefore pass it. “Supersede” may look the part, but it’s actually a figurative word meaning replace (e.g., I was superseded by younger workers at my job). Only “outstrip” and “overtake” carry the literal meaning of physically passing something. When X “assumes” Y, X accepts or seizes Y (e.g., a leader assumes power). It’s strange to think of a racecar assuming another racecar. Winning the race may lead people to call the winner the “champion,” but one car does not “champion” another. Similarly, “collide” might make you think of the car crashes that sometimes occur during car races, but a car cannot “collide another.” Rather, a car would collide with another.
Answer: C,F