Translation:They are making a cake in the kitchen.
I think "They are in the kitchen making cake." should be accepted. Duolingo insists that I add the article "a" in front of "cake".
Shouldn't they be 'baking' a cake. Although I guess 'making' a cake is fine too
I agree. Cakes are baked, not made, unless it is a no-bake cake, which is the exception not the norm.