Answer:
A. The nucleaus is filled with cytoplasm OR d. The nucleus is by a double layer membrane.
Step-by-step explanation:
b. and c. are true and I'm certain they are true
a. I know the inside of a cell has cytoplasm but I'm not sure if the inside of a nucleus is filled with cytoplasm. And d. I'm not so sure, so it's either a or d. Hope this helps!