The 'Mobility Transition Theory' was formulated by:

Question

Accepted Answer

The 'Mobility Transition Theory' was formulated by Zelinsky.

Here's why Option 2 (Zelinsky) is the correct answer and why the other options are incorrect:

*   **Option 2: Zelinsky (Correct)** Wilbur Zelinsky is widely recognized as the originator of the Mobility Transition Theory. He proposed this theory in his 1971 paper, "The Hypothesis of the Mobility Transition." The theory outlines a predictable pattern of migration changes that occur as societies undergo modernization and development. It links migration patterns to stages of demographic and economic transition.

*   **Option 1: Ravanstein (Incorrect)** While Ernst Ravenstein is a significant figure in migration studies, he is best known for his "Laws of Migration," which were formulated in the late 19th century. These laws are foundational to understanding migration patterns, but they predate and are distinct from Zelinsky's Mobility Transition Theory. Ravenstein's work focuses on general observations about migration flows, distances, and characteristics of migrants, not a stage-based model of mobility transition linked to development.

*   **Option 3: Lee (Incorrect)** Everett Lee is known for his "Push-Pull Theory" of migration, which focuses on the factors that either attract people to a new location (pull factors) or force them to leave their current location (push factors). While Lee's theory is important for understanding migration decision-making, it is not the same as the Mobility Transition Theory, which describes broader societal shifts in migration patterns over time.

*   **Option 4: Cristopher (Incorrect)** There is no widely recognized migration theory or significant contribution to migration studies attributed to a scholar named "Cristopher" (or Christopher with a 'ph'). Therefore, this option is incorrect.