British Columbia, Canada
The following excerpt is from Lensu v Victorio, 2019 BCSC 59 (CanLII):
To recover damages, the plaintiff must show causation between the accident and her injuries. The test applied is the "but for" test. The plaintiff must prove that but for the defendant's negligent acts, her injuries would not have occurred: Athey v. Leonati, 1996 CanLII 183 (SCC),  3 S.C.R. 458 at 466–468.
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