The suffix is spect which means to see or look.
Citizens of the United States vote for people to represent their ideas and make decisions for them in the government, whereas in a direct democracy citizens would vote on issues directly.
I Believe the answer is: Strong
An argument could be considered as storng if the data at hand show strong correlation between the argument and the fact on field.
In this case, the <span> strong correlation between execution of criminals and the decrease in number of serious criminal behavior would support the argument that favor death penalty.</span>