Final answer:
The integer that can be inserted on the blank line in the list is -2.
Step-by-step explanation:
The numbers in the list are ordered from least to greatest: -15, -3 4/3, -1, 5, ____, 2.3, 5 2/3
An integer that can be inserted in the blank line is -2. This is because it is between -3 4/3 and -1, and it is an integer value.
The answer is option A, -2.