Answer:
Option B. Hexagon
Explanation:
The minimum number of triangles needed to construct a polygon is always represented by (n - 2) where n is the number of sides.
Now we put the values of n.
for n = 3 number of triangles = (3 - 2) = 1
for n = 4 number of triangles = (4 - 2) = 2
for n = 5 number of triangles = (5 - 2) = 3
for n = 6 number of triangles = (6 - 2) = 4
We have got the answer.
If minimum number of triangles are 4 then polygon formed is Hexagon where number of sides n = 6.
Option B. Hexagon is the answer.