The phrase "arose when it was" is grammatically correct and can be used in written English.
It can be used to indicate the time or circumstances under which something came into existence or occurred.
Example: "The issue arose when it was least expected, catching everyone off guard."
Alternatives: "emerged when it was" or "occurred when it was".
Instead, the problem arose when it was metabolized by bacteria in the intestines and ended up as TMAO in the blood.
Although the code had been used in Manhattan for two years, problems arose when it was introduced in the 718 boroughs.
Entire column devoted to the "debategate" Scandal, which arose when it was discovered that Carter's briefing notes for the 1980 debate with Reagan had been acquired by the other side.
Find out how this concept was introduced into the United States government, what debates arose when it was first suggested, and how it has been applied throughout United States history.
It would also create uniform guidelines for notifying the public of threats to civil aviation - a question that arose when it was disclosed that an F.A.A. security bulletin about the threat of a terrorist bombing of a United States-bound Paircraftrcraft was issued and distributed by the State Department to its personnel in December 1988.
On Saturday, the memorable noises included not only the expected roar when Golovkin emerged, grinning, in his embroidered robe, but also the boisterous booing that arose when it was announced that one of the celebrities in attendance was Donald Trump, who paid a friendly pre-fight visit to Golovkin in his locker room.
A similar problem arises when it is unclear what constitutes lawful behavior, which is frequent in heavily regulated areas.
Split-plot experiments may arise when it is impractical to completely randomize the treatment combinations of a designed experiment.
The problem arises when it is not treated correctly and this is a problem in developing countries.
Another case arises when it is necessary to machine high-carbon tools in order to form a die.
The sources of ambiguity include ambiguities at the sentence and utterance levels, ambiguity arising from the existence of multiple explanatory plan schemas, ambiguity arising when it is possible to place a mentioned concept into more than one competing category, and ambiguity arising when it is unclear which concept is the topic of a particular relation (such as a question).
