The median of a triangle is a line that joins one of the vertex with the midpoint of theoposite side of the triangle and bisecting that side. Each triangle has three medians, one for each vertex and they all cross paths in the triangle's midpoint.
Triangle 1
The three lines divide the angles in exact halves, wich means they are bisectors, looking at the diagram, two of the lines are slightly below the midpoint of the oposite side, without clear measures is not possible to be sure, the lines can be considered to be the medians (approximately)
Triangle 2
The three lines join the vertex with the oposite side of the triangle in aparently their midpoint and meet in the middle of the triangle, so these are also the medians of the triangle.
Triangle 3
These lines joint the vertex with the oposite line but at least one of them doesn't join it in the midpoint, meaning, that line segment is not a bisector, then the lines in this diagram don't show the medianst of the triangle.
Triangle 4
The line shows the vertex with the oposite side, but it doesn't join it in its midpoint so it desn't represent the median of the triangle.
Correct options are tiangle 1 and 2