An ant is at the bottom-left corner of a grid (point $\text{P}$) as shown above. It aims to move to the top-right corner of the grid. The ant moves only along the lines marked in the grid such that the current distance to the top-right corner strictly decreases.

Which one of the following is a part of a possible trajectory of the ant during the movement?

An ant wants to move from the bottom left corner to the top right corner, in such a way that distance will be strictly decreasing ${\color{Blue}{\text{(means distance will be decreased at every move). }}}$
So, only option $\text{C,}$ satisfied the conditions.
Correct Answer $:\text{C}$