Final answer:
The practice that Kenny criticizes Rukmani for is arranged marriages.
Step-by-step explanation:
Arranged marriages are the Indian custom that Kenny criticizes Rukmani for. In Indian culture, marriages are often arranged by the families of the couple. This practice involves the families finding a suitable partner for their son or daughter based on factors such as caste, social status, and financial stability. Arranged marriages are a deeply rooted tradition in Indian society and continue to be practiced by many families.