The fact that you are most likely to marry someone who lives near you illustrates the _______ effect.

A) propinquity
B) numerosity
C) similarity
D) reciprocity

Propinquity

The physical or psychological proximity between people, which increases the likelihood of interaction and relationship formation.

Similarity

The state of being alike or sharing common features, often used in psychology to explain patterns of attraction and social cohesion.

Numerosity

The cognitive ability to understand and recognize quantities or the number of objects in a set.