Answer
Similar to the previous question here: A subset of B, B Subset of C, so their venn diagram is drawn as given below.
Work Step by Step
The first of question there is A is subset of B (A⊆B) which means B is super set of A so A is drawn inside B,
The second part of the question is B is subset of C (B⊆C), means C is super set of B so B is drawn inside C.
As a conclusion i have made A ⊆ B ⊆ C also so that it could be more clear to you.