Q12 - Poor nutrition is at the root

[YudeS218]

I think in this question, D does provide support by eliminating alternative explanation.

I know why E is correct, but I believe D is also correct. There was an experiment was done by some Harvard professors, aimed at find the ways of how can managers improve productivity in factories by improving workers' working efficiency. But these professors found that, workers' working efficiency skyrocket, therefore improved factories productivity, while they haven't done anything. And they later found that, workers began to work more efficient merely because of the fact that they knew some Harvard professors came here and done research.(Workers maybe feel honored, etc)

In this case, these young offenders maybe become less violent merely because of the fact that they know they are being researched. Therefore answer choice D eliminate this alternative explanation.

Am I wrong?

Non-native speaker, forgive my poor English.
Feedback is appreciated.

[AlisaS425]

(D) is a common wrong answer on arguments like this. Demonstrating that the opposites of what we're discussing occur together does not logically strengthen the argument at hand. [i]The fact that some tall people are good at basketball does not strengthen the argument that short people are bad at it.[/i]

I have a question regarding (D). If (D) said "a further study investigated young offenders who were nonviolent and they tended to choose a high nutrition diet", would it be a correct answer choice?

[JeremyK460]

(D) is a common wrong answer on arguments like this. Demonstrating that the opposites of what we're discussing occur together does not logically strengthen the argument at hand. [i]The fact that some tall people are good at basketball does not strengthen the argument that short people are bad at it.[/i]

I have a question regarding (D). If (D) said "a further study investigated young offenders who were nonviolent and they tended to choose a high nutrition diet", would it be a correct answer choice?

in the NBA, the players who were most aggressive tended to drive to the basket
during the offseason, some of the most aggressive players were coached to shoot threes more instead of drive
as a result, those players relatively showed more of a relaxed play-style
this confirms the link between focusing more on shooting threes and the degree of play-style

NBA players who had a more relaxed play-style shot usually shot more threes
some of the most aggressive NBA players who weren't coached 'threes over drive' showed no reduction in their driving

the reason D is wrong is because it's about the class of NBA players OUTSIDE of the class of players associated with the argument's purported causal relationship (about the most aggressive players and driving to the basket and the most aggressive players who turned to threes over their driving)

in other words, D's terms are too ambiguous for me to relate it to the relationships expressed in the argument