Final answer:
The possible automatic type conversions are short to int, byte to int, and int to long. Long to int is not automatically possible as it requires an explicit cast.
Step-by-step explanation:
The question is asking about automatic type conversion, which is a concept in programming where values are automatically converted from one data type to another. In many programming languages, there is a concept known as "type promotion" or "implicit casting," where smaller data types are automatically converted to larger ones to prevent data loss.
The automatic type conversions that are possible from the given options are:
A. short to int - A short can be automatically converted to an int.
B. byte to int - A byte can be automatically converted to an int.
C. int to long - An int can be automatically converted to a long.
Option D, long to int, is not an automatic conversion because a long has a larger range than an int and thus requires an explicit cast to prevent data loss.