To answer this question, we need to understand the prefixes used in property names to indicate how their values can be updated.
Option A) ps - This option is incorrect because the prefix "ps" does not indicate that the value of the property can be updated directly by worker inputting information through a web form.
Option B) py - This option is correct because the prefix "py" is commonly used to indicate that the value of the property can be updated directly by worker inputting information through a web form.
Option C) px - This option is incorrect because the prefix "px" does not indicate that the value of the property can be updated directly by worker inputting information through a web form.
Option D) pz - This option is incorrect because the prefix "pz" does not indicate that the value of the property can be updated directly by worker inputting information through a web form.
The correct answer is B. This option is correct because the prefix "py" is commonly used to indicate that the value of the property can be updated directly by worker inputting information through a web form.