If the time is 18:00 UTC, what time is it in Vancouver?

To determine the time in Vancouver when it is 18:00 UTC, you need to consider the time zone difference between Coordinated Universal Time (UTC) and Pacific Standard Time (PST). Vancouver follows PST, which is 8 hours behind UTC.

Starting from 18:00 UTC, you will subtract 8 hours to convert to PST.

18:00 UTC - 8 hours = 10:00 AM PST.

This calculation shows that when it is 18:00 in UTC, it is indeed 10:00 AM in Vancouver under Pacific Standard Time, making this option the correct answer. Vancouver observes Pacific Daylight Time (PDT) during daylight saving time, where the offset is 7 hours behind UTC, but as the question specifies PST, the 8-hour difference is the right consideration.