Answer:
Assumes that taking a first step will inevitably lead to other steps that cannot be prevented.
Explanation:
According to the Slippery Slope Fallacy, taking a first step will cause a process of steps that cannot be controlled, and that will create all sorts of inenteded consequences.
The Slippery Slope Fallacy thus negates the possiblity that humans have agency over their own problems and objective conditions, and assumes a deterministic view of life.