Which are effective elements of an opening statement about the increasing costs of higher education? use of rhetorical techniques use of charts and graphs use of appropriate style use of persuasive language use of a plan of action use of statistical evidence

The answers are:

Use of persuasive language

Use of statistical evidence

Statistical evidence added uo to a persuasive language will help demostrate the difficulties faced by the young these days due to the elevated cost of higher education and how this affects their lifes, and their future. The increasing of student loans and the long time it takes to pay them vs the benefits of studying higher education in the country.

what's this it's not giving you what have to do.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.