Over time, emerging technologies become . more reliable and harder to use

less expensive and more reliable

less reliable and easier to use

more expensive and less reliable

I think the answer is the first option, more reliable and harder to use.

Explanation:

I think this because technology is expensive and the most reliable thing we have right now so the other options don't make sense.

not too sure maybe olecranon process

the denominator has a very specific role.