Subject of Creon's speech

Aspot in middle of the retina that only contains cones is called the

Eating while you drive a.increases your risk of being involved in a collision b.is only risky with heavily packaged foods c.should only be done with food that can be handled easily

What is the independent cause in this sentence? "if the poem is about going mad when love is lost, what would happen if love didn't die? "