Final answer:
The concept of 'shipping' FNAF characters is subjective; thus, what are considered the worst ships is based on personal opinion. Fans have varied preferences, making it impossible to definitively label any ships as the worst.
Step-by-step explanation:
When it comes to FNAF (Five Nights at Freddy's) ships, opinions on which ones are considered 'the worst' can vary greatly among the fan community. The concept of 'shipping' involves fans pairing two characters together in a relationship, and it is based purely on individual interpretation and personal preference. Therefore, the answer to the question about the two worst FNAF ships is d) It's a matter of personal opinion.
Every fan has different views on the relationships between characters, and what might seem like an odd or unpopular pairing to one person could be a favorite to another. So, while some may find Foxy x Mangle or Bonnie x Chica to be less favorable than others, it's important to respect everyone's opinions and remember that in a community as diverse as the FNAF fandom, there is no definitive answer to which ships are the worst.