Answer:
priest
Explanation:
Mother died in child birth
father was present during birth
married sister....to someone else like at a ceremony
The answer to this question is Lube.
This process involves cleaning every parts of the frozen yogurt machine (even the smallest one on the inside)
This is really important because a frozen yogurt machine will always leave residual ingredients on its smallest parts and it could go rotten if it left inside
His first step was to "Evaluate the Decision".