Pretty sure it’s c! I’m not 100% tho sorry if I’m wrong have a nice day:)
Answer:
For undirected graph n(n-1) for directed graph 
Explanation:
The maximum number of edges for a undirected graph is given by 
, where n is number of vertices
The maximum number of edges in directed graph is given by , where n is number of vertices
The maximum number of edges is greater in undirected graph than directed graph
Answer: (a) Target had security software, but the notification alerts from the software were ignored.
Explanation:
The security software was there in target but its notification alerts being ignored was something which was not thought to have been occurred during the Target security breach, as anyone could be alerted with the notification alert.
Answer:
boolean recalled;
((modelYear>=1999 && modelYear<=2002 && modelName=="Extravagant") || (modelYear>=2004 && modelYear<=2007 && modelName=="Guzzler")) ? recalled = true : recalled =false
Explanation:
Using a combination of comparison operators and logical operators, the conditions stated in the question is captured in the code snippet with the boolean variable recalled also declared. Since we are not allowed to use the if statement, we have used the conditional or ternary operator that checks if a condition is true executes the statment that follows the question mark else it executes the statement after the full colon.
