Why does Margaret Kochamma divorce chacko

After falling for Chacko and marrying him (which was the last thing her parents wanted for her), she realized that Chacko was not the right man for her. While pregnant with their first and only child, Sophie Mol, Margaret fell in love with a man named Joe. She divorced Chacko, which broke his heart.

Explanation:

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).