The correct option is Option D.
STEP - BY - STEP EXPLANATION
What to find?
The picture whole picture of the give 1/4 triangle.
We need to note the following keypoint:
Fraction is part of a whole.
1/4 implies that the the whole part of the fraction is being divided into 4 equal part and 1 part of the fraction is taken out.
Now, observe that the figure that is being divided into four equal part is option D with its part represented as 1/4.
Hence, the correct option is D.