Positive institutions studied in positive psychology include all of the following EXCEPT a. all religious institutions. b. good work environments. c. safe and supportive neighborhoods. d. close-knit families.

a. all religious institutions

Explanation:

Positive institutions refer to institutions that are organizations and the practices which are structured in societies in order to establish the greatest strengths of human, boost up human strengths, etc

While on the other hand, positive psychology refers to the behaviors of the person or communities that to be prospered in order to give meaningful lives and motivate the experience towards love, work, etc

So based on the given situation, the option b, c and d are deal with both the above terms as it demonstrates the positive way to build a strong, secure, relationship with the colleagues, families, neighborhoods, etc

Hence, the option a is correct one