Since Eric received second place while Ian received first prize in the contest, 
OPTIONS:
- Eric was awarded a gold medal.
- Ian was awarded a gold medal.
Ian was awarded a gold medal.

The CEO brought in new software and machinery to improve innovations, but the 
OPTIONS:
- software had faulty parts.
- machinery had faulty parts.
machinery had faulty parts.

Aaron had a good relationship with their family but Jeffrey didn't. 
OPTIONS:
- Aaron visited their parents quite often.
- Jeffrey visited their parents quite often.
Aaron visited their parents quite often.