Final Answer:
Data type that allows alphanumeric characters and special symbols is Text.
Option a. Text is answer.
Step-by-step explanation:
The correct answer is option A, "Text." In database systems, the "Text" data type is designed to store alphanumeric characters and special symbols. This type accommodates data entries that include both letters and numbers, making it versatile for various applications. It is distinct from the "Memo" data type, which is typically used for longer text entries. The "Auto number" data type, represented by option C, is used for automatically generated unique identification numbers and does not support alphanumeric characters or special symbols. Therefore, selecting option A, "Text," accurately identifies the data type that allows alphanumeric characters and special symbols.
Option a. Text is correct.