Step 1: Differentiate between push and pull factors of migration.
Push factors are negative conditions that encourage a person to leave their place of origin (e.g., poverty, war, natural disaster).
Pull factors are positive conditions that attract a person to a new destination (e.g., job opportunities, safety, better amenities).
Step 2: Classify the given options.
(A) Better living conditions - Pull factor.
(B) Favourable climate - Pull factor.
(D) Peace and stability - Pull factor.
(C) Poor living conditions - This is a reason to leave a place, making it a classic push factor.
Step 3: Identify the option that is not a pull factor. Poor living conditions is a push factor, not a pull factor.