The phrase "has sparked questions" is correct and commonly used in written English.
It is used to indicate that something has caused people to have questions or further discussions about it. Example: The new policy announced by the government has sparked questions about its potential impact on small businesses.
The lack of recordings in the heart of Moscow has sparked questions for authorities, who have claimed all cameras were working properly.
The rapidly accelerating crisis has sparked questions as to whether Greece may exit the 19-member Eurozone, in a potential move being dubbed Grexit.
The growing gap between the Islanders and their closest rivals has sparked questions about whether the metropolitan area can sustain three N.H.L. teams when only one other region (Los Angeles) has even two teams.
The takeover of Nest has sparked questions about data use and privacy, and the extent to which a Google-owned Nest would pass user data to Google, and how that might be used.
The fall of Ramadi last Sunday has sparked questions about the effectiveness of the Obama administration's approach in Iraq, a blend of retraining and rebuilding the Iraqi army, prodding Baghdad to reconcile with the country's Sunnis and bombing Isis targets from the air without committing American ground combat troops.
The project's original goal was to examine the link between hypoxia and cognitive decline by examining human performance in low-oxygen environments, but its abrupt end has sparked questions of a different sort.
All of these new possibilities have sparked questions on whether they could help college teams evade rules on how much athletes may train with coaches, although an N.C.A.A. spokesman indicated that no immediate concerns had been raised.
Revelations of fundraisers offering access to cabinet ministers for up to $1,500 a ticket have sparked questions about government transparency while at a youth labour forum last week, dozens of delegates turned their backs to Trudeau, heckling him to honour his promises on pipelines and tackling youth unemployment.
The dramatic alterations in physiology and metabolism associated with the state of pregnancy have sparked questions about the association of child-bearing with the subsequent risk of conditions such as diabetes.
ISIS's conquest of the capital of Iraq's largest province on May 17 has sparked troubling questions about the seriousness of the United States regarding its war against the proclaimed caliphate.
A graphic police video that appears to show two Sacramento police officers trying to run over a mentally ill homeless man with their cruiser has sparked tough questions from both city leaders and some law enforcement use-of-force experts who say it might be hard to justify the behavior.
