Its the 1st option (Adult to register.....)
It's 'in those days'.. specifying those days as in the past.
Is this from a passage or is this something you wrote yourself?
Answer:
Science Fiction
Explanation:
As the bold word above explains, science fiction is fiction, and that happens to be the main reason for people to read novels: because it´s fiction.
So whether you are technological whizzard or utterly lost in modern science, it doesn´t matter much when you are reading science fiction stories, you read them for a lot of other reasons. So the effect is minimal.
