In the first picture, the figure just moved to the right, the orientation is the same, so the new figure was generated by a TRANSLATION of the first figure.
In the second picture, the figure increased in size, but the orientation is the same, so the new figure was generated by a DILATION of the first figure. (This option is not available, so the answer in this case is NONE OF THESE)
In the third picture, the figure suffered a REFLECTION over the green line.
So the answers in order are TRANSLATION, NONE OF THESE and REFLECTION.