It’s a big deal because the Conservatives have been in power for the last 14 years and everyone is sick of the sight of them. Current projections show that this may be their worst showing ever.
Their main rivals, Labour, are going to dominate on a centrist platform, even though they are not promising much in the way of reform or change.
The biggest downside is that the Trumpish Reform party are looking like they’ll do quite well with xenophobic, right-wing, ex-Conservatives.
There is no rule that says the universe must make sense to human beings. In fact the more we learn about it - subatomic particles, quantum mechanics, the multiverse, etc. the stranger it becomes and the less it appears to operate in ways that are intuitive to our primitive primate brains.
Hell, even space and time might not be fundamental properties, and could themselves be abstractions which emerge from an even deeper underlying reality…
All of which is to say your list should have an extra option:
D. Who The Fuck Knows?