Before a structure can be used, it must be
a.
declared
b.
deallocated
c.
initialized
d.
all of the above

A. declared

Explanation:

Before a structure can be used, it must be  declared.

For example:

// Structure definition

struct s{

int a;

char b;

};

// Structure instantiation

struct s  mystruct;

// This is where a structure instance called mystruct is created whose

// datatype is struct s.

mystruct.a = 10;

mystruct.b = 'c';

As we can see from the example definition precedes use for the structure.

explanation:

because they are scammers. our phones tells us when there are known scammers calling just so we can be informed. so basically they want to scam you. lol

solution:

this situation is called an ip conflict.

data from a server is sent in small bits called packets. in an ip conflict, some packets will end up in one computer while some other packets will end up in another computer.

so…overall none of the computers get the data as the original message or picture being sent by the server cannot be retrieved with only half the packets. so it will show up as an error.

thus the final answer is d.