Which of the following would be the least effective reference?

How can i clip a picture to a question on the computer?

Apython programming question: assume s is a string of lower case characters. write a program that prints the number of times the string 'bob' occurs in s. for example, if s = 'azcbobobegghakl', then your program should print number of times bob occurs is: 2

Which type of entity describes a fundamental business aspect of a database? a. linking b. lookup c. domain d. weak