Let us describe each word
Collinear: means some points lie on the same straight line
Congruent: means 2 figures have the same shape and same size
Perpendicular: means two lines intersected at a right angle
Similar: means two shapes have the same shape but different size
Since in the given figure, the two triangles have the same measure of angles but have different sizes sides. (the sides of the small triangle are half the sides of the large triangle)
Then the 2 triangles are similar
The right answer is D
