What can cause failure and thrive?

What is one way in which an active listener can confirm understanding of a message?

Which term defines one's age as measured by how well the body is working? chronological age biological age social age mental age

Astairway has 6 steps. is it a handrail required? a. a handrail is required b. a handrail is not required c. double handrails are required d. only nosing is required