1. D             

Explanation: The first three shapes are all 3D drawings, so the answer is Figure D because the D image is also 3D drawings

2. N             

Explanation: The first three drawings are all joined by 3 triangles, shape N is also compounded by three triangles, the answer is figure N.       

3.E               

Explanation: The first three shapes are compounded by 4 lines, Figure E is also compounded by 4 lines, so the answer is Figure E.         

4.N

Explanation:The first three shapes are all non-closed shapes, shape N is also non-closed, so the answer is N