Because Marla is so strongly committed to a fat-free diet, she did not bother to read a recent report by the New England Journal of Medicine that suggested that some fat in our diet is healthy. The report was in a newspaper that Marla reads daily, but the headline did not appeal to Marla as a the result of .

Selective exposure

Explanation:

Psychologically, there are somethings that we read or hear and we will not actually ignore because that is not what we want or that is not what we think on a particular matter so we just ignore it maybe what we saw in the media or a discussion somewhere else and this phenomenon or theory is known as the Selective exposure. Selective from the word 'select' that is to pick from a group and then exposure, meaning been exposed to something. Joining the two words together will mean; picking from what one is exposed to.

This is exactly what happened to the person in the question -- Marla. From the question, we can see that in the newspaper in which Marla do read everyday, she saw the headline that shows the Importance of fat intake in our diet, but Marla is a ''fat- free'' kind of person, so she ignore. Marla is doing this because of selective exposure.

i think she would gain 18 grams

i agree d is most definitely correct!