Answer:
To avoid receiving malware-infected files like spam.
Explanation:
Hackers use malware to gain unauthorized access to company files and information for personal gain. Files infected by the malware can infect other systems or files. There are various types of malware namely; virus, trojan horse, worm, spyware, ransomware, adware etc.
Answer: C. Data type
Explanation:
data types are defined as the data storage format that a variable can store a data to perform a specific operation. Data types are used to define a variable before its use in a program. Size of variable, constant and array are determined by data types.