Answer:
a machine used for imitation
Explanation:
To simulate is similar to imitate. In the passage, the machine allows the turtles to move their legs as if they were swimming. It copies the conditions turtles need to swim.
Simulators can be mechanical, as in the example, but there are also virtual simulators which are used in all kind of experiments, training, and leisure. Think of videogames or flight simulators.
Custodial interrogation refers to questioning conducted by officers of the court or law while you are in their custody. While such interrogation most commonly takes place at police stations or holding areas, custodial interrogation can occur at any time when a person's freedom is limited while he is being questioned.
