There is a two$-$story frame$-$construction building in a one hundred year flood plain on the banks of the Piscataqua River in Falmouth, Maine. The building is occupied by an antique furniture restoration business owned by Ed McGreevy. Ed owns both the business and the building that houses it$.$ The building is over $150$ years old and was formerly a residential property. The plumbing and electrical have not been updated since the early $1940\text{'}$s and the building remains as it was when it was used as a single$-$family home. The building is surrounded by huge old$-$growth trees, some of which have now grown over the house to a significant extent. Ed likes the shade these trees provide. In the furniture restoration business, Ed does everything from stripping old furniture finishes to re$-$application of new finishes and making woodworking repairs. The stripping and re$-$application of finishes requires the use of highly flammable thinners and solvents.Using the COPE approach, which of the following would represent the $"$O$"$ in COPE?

Question $20$ options:

a$)$

The location of the building next to the river.

b$)$

The wood frame construction.

c$)$

The lack of any fire sprinkler system.

d$)$

The building houses a furniture restoration business that uses flammable liquids.