Answer:
Una de las enfermedades más terribles de este periodo fue la peste negra, que causó tal epidemia que en aquella época se decía que apenas había vivos para enterrar a los muertos, ya que murió más de un tercio de la población europea.
Explanation:
You have to be 18 years old.
Answer: c) Spontaneous recovery
Explanation:
Spontaneous recovery is the mechanism in which conditioned response that was gone or vanished earlier occurs again after some period of time .Instant re-emergence of any memory, phobia, fear, thought that was previously gone is faced after time delay .
According to the question, Mariah is experiencing spontaneous recovery in which is facing water fear again after time delay even when she took swimming course to get rid this fear.
Other options are incorrect because observation learning, extinction and generalization is not determine classical conditioning process.Thus, the correct option is option(c).
Answer is a
protection from costs of unplanned events
