Answer: a) 
(b) 
(c) 
(d) 
Explanation:
The formal description of the given sets are as follows :-
a) The set containing the numbers 5, 9, and 27.
(b) The set that contains all the natural numbers less than 2.
(c) The set containing the empty string.
We know that in formal description, the empty string is denoted with 
.
Thus, the required set :
(d) The set containing nothing at all.
B, plants and weather are part pf nature.
I think it's antivirus because Antivirus means to protect your computer from a deadly virus
Answer:
software governing the organization of data on physical storage media.
Explanation:
Data management platform can be regarded as a foundational system utilized in collection and analyzing of large volumes of data across an organization. Data management encompass some variety of interrelated functions, the basic technology that is been utilized in
deployment and administering databases is regarded as database management system. Database technologies collect, store and also organize information then process it o that a user can easily finds needed details when they need it . It should be noted that Data management technology consists of the software governing the organization of data on physical storage media.
