Self-study
Conclusion Among the various models of Delta vacuum cleaners, one cannot accurately predict how effectively a particular model cleans simply by determining how powerful its motor is. ███ ██████████ ██ ████ ██████████ ███████ ██████ ██████████████ ████ ███████ ██████ ██ █████ ██████ ████████ ████████ ████ ███████████ ████████ ███████
Summary
The author concludes that one can’t predict how effectively a Delta vacuum cleans just by determining its motor power. He supports this by saying that the efficiency of dust filtration systems varies greatly, even between models with the same motor power.
Missing Connection
The author’s conclusion is about predicting a vacuum’s cleaning effectiveness, but his premise says nothing about cleaning effectiveness. To get from his premise to his conclusion, the author must assume that the efficiency of a vacuum’s dust filtration system impacts that vacuum’s cleaning effectiveness.
4.
The argument's conclusion is properly █████ ██ █████ ███ ██ ███ █████████ ██ ████████
a
For each Delta ██████ ████████ ███ ██████████ ██ ███ ████ ██████████ ██████ ███ █ ███████████ ██████ ██ ███ ███████████ ██ ███████
If the efficiency of the dust filtration system varies between vacuums and significantly impacts a vacuum’s effectiveness, then this guarantees the conclusion that one can’t predict how effectively a Delta vacuum cleans just by determining its motor power.
b
One can accurately █████ ███ ████████ █ █████ ██████ █████████ █████ ██ ████ ███ ██████████ ██ ███ ██████ █████████ ████ ██████████ ███████
This tells us nothing about whether one can accurately predict how effectively a vacuum cleans based only on motor power. Even if the dust filtration system shows us the motor power, we still don’t know if it impacts the vacuum's cleaning effectiveness.
c
All Delta vacuum ████████ ████ █████ ███████ ███████████ ████ ███████████ ████████ ███████
This doesn’t help to prove that only looking at motor power is not enough to accurately predict a vacuum’s cleaning effectiveness. We still need to know how dust filtration system efficiency is related to cleaning effectiveness.
d
For any two █████ ██████ ████████ ████ ███████ █████████ ████ ██████████ ████████ ███ ███ ████ ███ ████ ████████ █████ ██████ ████ ████████████
e
One cannot accurately ██████ ███ ███████████ ███ █████ ██████ ███████ ██████ ███████ ███████ ███ ████████ ████ ██████ █████████ █████ ███
This doesn’t establish that motor power alone is not enough to accurately predict cleaning effectiveness. We still need to know how dust filtration system efficiency is related to cleaning effectiveness.