Answer:
b
Step-by-step explanation:
The comma is used to indicate a short pause in writing. You wouldn’t use it in the sentence you have quoted. If you changed it the other way round, you would use a comma as I have just done. In other words if you start with a subordinate clause (secondary clause), the comma is used before the start of the main clause as in: Because the sun was in his eyes,Jozef didn’t see the ball,