Respuesta :
All of the Above. Conscience is the sense of knowing what is wrong and right. It is a moral awareness and a feeling of guilt when we violate it or when we misbehave. Conscience is an area of the mind that is aware of the surroundings.
1 is correct because it is a noun and it has to be used as a noun. Its definition is correct, it is an uncountable noun.It is not an adjective and it is an inner sense of what is right and what is wrong.In all dictionaries entries it appears only as a noun and also , as a noun , in some idiomatic expressions.Finally, it is inner sense, not thoughts.