"Their" is correct, because it shows possession of the desk by someone else.
Answer: D. Informing the student body about the school's new recycling program.
A website would be particularly effective in this case because the audience that needs to be reached is a large one (the whole student body). Moreover, the topic is one which could be significantly complex. Students will probably use it as reference, so they will need to check it several times. A website would make it easily accessible and always available.
Yes you can also express your feelings if you don’t know!
Absorb- take in or soak up (energy, or a liquid or other substance) by chemical or physical action, typically gradually.
anxiety- a feeling of worry, nervousness, or unease.
bafflement- confuse, bewilder, or perplex.
