The literary device used here is anachronism.
Explanation:
The person here is said to have been 'wobbled' on to the floor.
This is not an action that a human is often portrayed as doing anywhere so it does not really fit human description but shows a form of action that happens to things.
This suggest the situation and how bad the fall actually is.
It also suggests that the situation and the tone of the passage is rather comedic and used in a sense that is strategically that way.
D. How did you manage to settle all the tasks given to you in such a short time?
It's B. The other answers have the pronouns in the Nominative case.
Answer is B population growth
Credible would be
Someone who's credible is honest and believable. ... Similar to words like reliable and plausible, credible is an adjective that comes to us from the Latin credibilis, meaning “worthy to be believed.” A credible reputation is often earned through consistent good behavior and an overall trustworthy personality.