How can I make it more obvious that these are links?

The most obvious way to make something look like a link is to underline it. So underline.

1. How do you emphasize a link?

How do you emphasize a link?

Text links should be underlined and in a color that stands out from the rest of your content. People expect them to look that way, and not styling them according to these conventions will make them less usable and noticeable.