Depending on what you mean. As in things such as pictures, etc. How it enhances text is by putting more emphasis on sed text by showing more prevalent details.
B) To show the struggles of farmers during the Great Depression
The meaning of the word "attribute" is a characteristic feature by which something is distinguished: this is the correct answer. It does not have to be positive or negative: it can be either (benefit and asset would be only positive).
These words are different because they have different connotations. Premonition has a neutral connotation - if you have a premonition, you foresee, or predict that something is going to happen. On the other hand, foreboding has a negative connotation - if you have a foreboding, you have a feeling that something bad is going to happen.