TOEFL Reading: ETS-TOEFL阅读机经 - L1D08SMSTZQH7GR9L$

In paragraph 2, why does the author contrast the visibility of lizards that remain motionless most of the time with the visibility of lizards that move most of the time A. To show that it is possible for lizards to alternate their foraging modes at successive levels in the food chain B. To suggest that sit-and-wait lizards are more likely than active lizards to be attacked by predators C. To explain why sit-and-wait lizards are more successful than active lizards at preying on insects D. To explain how a lizard's foraging strategy affects the type of predator likely to attack it