By the time Bella arrived at the meeting, the speakers already presented their plans for company improvements.

Had.

Explanation:

from my own personal expirence food stamps has alot this makes it eaiser so we can affod bills and so we can life a better lifestyle not needing to worry about paying actual money to buy food since most people spend 100-300 dollars a month on food so this alot so we can afford other bills and other stuff we need

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.