As more and more respondents have access to the Internet, online surveys, a form of computer-administered surveys, are often combined with some other method, such as telephone surveying, a form of person-administered surveying. This is an example of what type of survey?
a) Computer and self-administered survey
b) Multiple methodology survey
c) Combination methodology
d) Mixed-mode survey

answerthe above statement is (true);

answeroperating system;

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.