Unity (C#) - How to make a delay?

Question

C++ / C#

What are the ways to make a delay in the code? For example: one action occurs, a timer (delay) is activated for 30 seconds, then certain actions occur, and after 30 seconds everything repeats.

Answer 1

Coroutines

Answer 2

Thread.Sleep(1000)
Task.Delay(1000).Wait();
awaitTask.Delay(1000);