Which of the following is correct? The wool's too course for clothing

The wool's too coarse for clothing

Which of the following is correct? I had steak for my main coarse

I had steak for my main course

Which of the following is correct? He tried to keep the boat on course

He tried to keep the boat on coarse

Which of the following is correct? The ship changed course

The ship changed coarse

Which of the following is correct? They were course and rude

They were coarse and rude

Which of the following is correct? That's the best course to take

That's the best coarse to take

Which of the following is correct? He had a head full of course hair

He had a head full of coarse hair

Which of the following is correct? This herb has a coarser flavour

This herb has a courser flavour

Which of the following is correct? Mix the soil with course sand

Mix the soil with coarse sand

Which of the following is correct? He changed the coarse of history

He changed the course of history