My 2 cents.
1:The administrators of a music downloading website were worried that the lack of downloadable movies and TV shows could diminish the popularity of their site .
2:The survey found that onlya small percentage of their current customers were interested in purchasing movies
(CONC:)adding movies would not significantly increase traffic to their site.
The conclusion is based on the result of study. If we can put the study result in doubt that would weaken / cast doubt on the conclusion.
...
1:The administrators of a music downloading website were worried that the lack of downloadable movies and TV shows could diminish the popularity of their site .
2:The survey found that onlya small percentage of their current customers were interested in purchasing movies
(CONC:)adding movies would not significantly increase traffic to their site.
The conclusion is based on the result of study. If we can put the study result in doubt that would weaken / cast doubt on the conclusion.
...







