Problem: Kayla did amazing on the exam compared to Elena, due to

My choice: Elena being unprepared for it.

Problem: Steven had to convince Nelson to jump in the frozen lake.

My choice: Nelson hated the feeling of cold water baths and showers.

Problem: Randy had always recycled their plastic but Ian did not because

My choice: Randy was environmentally responsible.

Problem: Sarah cooked a delicious fish for Tanya to eat because

My choice:
Sarah was an highly skilled cook.