I can’t imagine it, so no. Not that I don’t trust her but there could be a lot of unforeseen circumstances even if we were to take the same route together multiple times.

After reading lots of cases that has happened to most young children. I will NEVER let my child to take public transportation alone

Oh, 5 year old is still young! I'll get very worried, maybe i'll let them travel on their own when they're 10 years old

No still need supervision. But maybe can try starting 6-7. I’ll follow them in the first couple of times.

Depends on location. If is somewhere near and we know that the place is safe

No. But on second thought Singapore is safe enough. Maybe when they’re 8.

If there is someone watching them from afar, I wouldn’t mind at all

Depends on my child.. Whether she is responsible and mature enough.

I think only when older like during primary school

I'm a paranoid parent. Better safe than sorry.