According to the center for 21st century skills, critical thinking ability includes all of the following skills, except
a. reason effectively
b. solve problems
c. communicate clearly
d. use systems thinking

The correct answer is "C".

Critical thinking is a procedure that involves a detailed analysis of the facts in order to form a judgment that will subsequently lead to a decision. This procedure includes analyzing all the stakeholders involved in a particular situation and the scenarios that would materialize according to one decision or another.

the use of electrical signals that transit messages is know as