Answer:
False analogy.
Explanation:
False analogy can be defined as a type of fallacy in which comparison is made of two similar ideas but is not able to hold up the comparison. In simple terms, when two things, suppose X and Y are compared and they have A idea in common then it will be assumed that they will have B idea also in common which is a false fallacy.
In the given case, it is an example of false fallacy or analogy as comparison is made between the crimes and punishment. The punishment for murder is the death penalty and long term jail for robbery, assault, etc and the argument is made that the punishment for murders should also be long term jail. But the conclusion is flawed.
So, the correct answer is false analogy.