Wait and see.
Go along with others.
Leave it to chance.
On impulse.
Think it through.
It feels right.
Least risk.
You delay the decision for as long as possible.
You toss a coin to help you with the decision.
You look at the options and decide carefully.
You take the safest alternative.
You follow whatever comes into your head.
You follow your gut feeling about the situation.
You follow a popular trend.