Answer: The correct option is, a high degree of inter-molecular bonding.
Explanation :
Surface tension : It is a force which is present within the surface layer of a liquid that causes the layer act as an elastic sheet.
For example : The insects walk on water surface due to this force.
It is caused by the inter-molecular force of attraction between the molecules of the liquid.
So, the high surface tension results from the high degree of inter-molecular bonding.