(C) The beetles maintain a fixed time interval between pauses, although when an insect that had been stationary begins to flee(逃走), the beetle increases its speed after its next pause. (一个原来stationary的虫子开始逃跑了,但这个beetle是在休息之后才加速的,说明它瞎,不然立马就加速了,支持了视力论;从休息间隔不变得到:体力没问题,要不然它休息的频率会变高,削弱体力论)