In the light of Thorndike's 'Theory of Identical Elements' and Charles Judd's 'Theory of Generalization', when a learner uses logical skills acquired in mathematics to solve numerical problems in physics, under which specific category will this process of 'Transfer of Learning' fall, and which of the following best explains its elemental nature?

Transfer of learning is the process in which knowledge, skills, or habits learned in one situation are used in another situation. When prior learning assists new learning, it is called positive transfer. When knowledge is used in two different subjects of the same level or similar difficulty (such as mathematics to physics), it is called lateral transfer. Thorndike's theory of identical elements and Judd's theory of generalization explain this process.