Describe what you can see in these photographs.
Correct answers. but you should say: "In thus photos (or photographies), I can see "a" instead of "the"
Your answer is very good and would be understood perfectly.
A very natural way of saying this would be 'I can see a coffee' or 'I can see some coffee'. You might not say 'the coffee' unless you were selecting from a menu or list. The best answer could be 'I can see some coffee, a waiter, and some cutlery'.
Please note that 'in thus photos' is NOT correct. It would be correct to add 'In these photos I can see...'
It is wrong to say 'In these photographies...' in Australian English. Photography is the art or practice of taking photos. Photo is an abbreviation in common use instead of photographs.