Jackie has noticed rat droppings around the back corners of her commercial kitchen and is worried that there might be a large number of pests developing, which would mean that she is dealing with what?
ΟΑ.
an infestation
OB
a FIFO
OC bacteria
OD
a waste management problem

OA an infestation
Explanation: an infestation is the presence of an unusually large number of insects or animals in a place, typically so as to cause damage or disease.

hope that helps if you have any questions let me know and if you could mark this as brainliest i would really appreciate it!!

Generally spontaneous human combustion is something that still bewilders some, human combustion happens very rarely and doesn't affect the surrounding areas, so unless you want to set your self on fire, human combustion will remain spontaneous and very rare.