I guess the word in the blank is Standardization.
Human systems integration (HSI), a supportability issue that every program should consider, addresses such factors as accessibility, visibility, testability, and Standardization.
Answer:
Subject
Explanation:
The kind of word that is pronoun in bold letters is "Subject".
In Example
We get our paychecks on Friday, and I always need mine.
There We and I are subjects.