Does effective advertising require a higher budget expense than ineffective advertising?Notice that the question stem uses the word "require."
"Require" is an indicator that something is necessary.
So, the question stem is asking whether a higher budget is necessary for effective advertising.
(1) Companies that allocate higher budgets to advertising tend to experience increased sales revenue."Increased sales revenue" does not necessarily mean "more effective."
After all, a company that allocates just a small budget to advertising could have some sales revenue, in which case the advertising may be effective, just not very powerful.
So, this choice does not tell us whether effective advertising require a higher budget expense than ineffective advertising. It tells us only that a larger budget can result in more revenue.
Insufficient.
(2) Effective advertising can drive higher consumer demand.This choice presents a result of effective advertising, "high consumer demand."'
However, we are seeking to determine what is necessary for effective advertising. So, this choice does not help with answering the question at all.
Insufficient.
Statements (1) and (2) combined.Since neither choice clearly indicates what size budget is necessary for effective advertisiing, combined the choices are not sufficient to answer the question.
Insuffcient.
Correct answer: E