Philosopher: Both the consequences and the motives of human actions have bearing on the moral worth of those actions.
Conclusion
Moral agency requires free will
Evidence
Moral agency requires a desire to conform to a principle
Evaluate
The nonetheless that starts the 2nd sentence shows us that the first sentence is not part of the argument core. The because tells us that the 2nd half of the 2nd sentence is our premise, which makes the 1st half of the 2nd sentence our conclusion.
For those of us not acquainted with the nerdy philosophical vernacular of "moral agent / moral agency", it basically means "a capacity for making moral decisions". We would hold a 12 year old accountable for hitting the dog in the face, because she has moral agency, whereas we wouldn't hold her 1 year old brother accountable for hitting the dog in the face, because he doesn't yet have moral agency.
The good news is that we could solve this argument formally, even if we didn't understand the constituent ideas.
If we're concluding "moral agent must have free will", we either use our knowledge that must = Right Side and write down Moral agent → free will
Or we use our knowledge that Required things go on Right to write Moral Agent → Free will (requires)
For the premise, we either use our knowledge that Without = If-Not and write down ~Desire to Conform To a Principle → Can't be Moral Agent
Or we think through Required things go on Right and write down Moral Agent → Desire to Conform To a Principle
Goal
Since the conclusion wants to build this logic connection: Moral Agent --------------------------> Free Will
and the premise has provided us with this: Moral Agent ----> Desire to Conform to Principle
our missing link would be this: Desire to --------> Free Will Conform to Principle
Or more conversationally,