Which word in this sentence is a transition to show sequence or results? The two companies met at Promontory, Utah, in May 1869. They then joined the railroad tracks with gold and silver spikes in a festive ceremony.

At
In
Then
With

then

Explanation:

then is a transition word from before to after, used in past tense it shows a transition in either instructions or action.

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.

just to , the answer is b on edge