The phrase "spark confusion" is correct and can be used in written English.
It means to cause confusion or create a sense of uncertainty or bewilderment. Example: The sudden change in rules sparked confusion among the students, as they were not sure how to proceed with their assignments.
Recent US policy changes have sparked confusion and contributed to the rising numbers.
A US coastguard training exercise in the Potomac river near the Pentagon sparked confusion amid today's commemorations of the 9/11 anniversary.
CHICAGO — A law to limit collective bargaining rights for public workers in Wisconsin was unexpectedly published by a state agency on Friday despite a temporary restraining order barring publication, sparking confusion and more animosity among legislators who have fiercely debated the issue for weeks.
The company's purchase of Boston Dynamics last month also sparked confusion about why a search company needs a robotics maker.
Governing body Zimbabwe Cricket sparked confusion on Thursday by issuing a press release announcing the tour had been "suspended" because of security concerns, then retracting this in another announcement 15 minutes later.
This decision, though following the precautionary principle, nevertheless sparked confusion, controversy and some harm.
Though one character had been killed off earlier in the second season, a former series regular appeared in the episode, sparking confusion among some viewers.
The abrupt announcement sparked confusion among banks on how to work with cannabis businesses without running afoul of federal money laundering laws.
That report sparked confusion and concern on both sides of the aisle, as lawmakers questioned the president's ability to handle sensitive intelligence.
Just a few short years ago, the term "Smartphone" sparked confusion among all but the savviest of teens and young adults.
