Final answer:
The ratio of squares to triangles is 2:5.
Step-by-step explanation:
The ratio of the number of squares to the number of triangles in simplified form is 4:10 (option c).
To find the ratio of squares to triangles, you need to count the number of squares and the number of triangles. Let's say you have 4 squares and 10 triangles. The ratio would be 4:10, which can be simplified to 2:5.
Therefore, the correct answer is d) 2:5.