The primary purpose of al gore's an inconvenient truth is
a to inform the reader that there is an environment hazard in burning fossil fuel
b to entertain the reader with stories from his college days and his professors quotations
c to persuade the reader that by taking steps now they can fight the damage done to earth atmosphere
d to express the author's personal opinion about his feelings towards the beauty of earth and his desire to share it with his children

idk

explanation:

the support that the author, uses in the article facing our fears is a): a definition of the part of the brain called the amygdala.

he takes neuroscientist joseph ledoux's words by telling that by falling to distinguish between evolutionary old systems located in the amygdala and newer systems, centered in the prefrontal cortex, doctors have conflated non conscious threat circuits in the brain with circuits that underlie the conscious experience of fear. that, the author says, "leads ledoux to the jarring conclusion that the amygdala, a decades-old centerpiece of the brain's fear circuit, does not underlie the conscious feeling of fear".

despite this, the author points out in the article that that is a controversial notion and that evidence, in animal and humans, supports the idea that core emotions can exist outside of conscious awareness.