Which is a characteristic of an effective problem statement? It is based on research. It contains outside information. It contains technical language. It is reviewed by competitors.

It is based on research

Explanation:

An effective problem statement is a term often used in research operation to describe a statement that practically deals with the current issue that needs to be solved, situations or circumstances that require enhancement, or a drawback that must be solved, which demands critical insight and conscious analysis.

There are various characteristics of Effective problem statement, some of which are:

1. It should focus on the need for solving the problem

2. The ways in which the problem will be solved should be stated in a precise and concise manner

3. It should be based on the main objective of the statement.

Hence, in this case, the correct answer is "It is based on research."

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt