Question

d
a hexagon with exactly
1 pair of parallel sides

Explanation:

Step1: Identify grid points for base

Select 2 horizontal points: e.g., $(1,1)$ and $(2,1)$

Step2: Add non-parallel upper points

Pick 4 points not aligned: $(3,2), (4,3), (5,4), (1,2)$

Step3: Connect to form hexagon

Connect points in order: $(1,1)\to(2,1)\to(3,2)\to(4,3)\to(5,4)\to(1,2)\to(1,1)$
Verify only the bottom side $(1,1)-(2,1)$ and no other parallel pairs.

Answer:

A possible hexagon is formed by connecting the grid points in the following order (using a 5x5 grid coordinate system where the bottom-left is (1,1)): $(1,1)$, $(2,1)$, $(3,2)$, $(4,3)$, $(5,4)$, $(1,2)$, back to $(1,1)$. This shape has exactly one pair of parallel sides (the bottom two points' segment has no other parallel segments in the figure).