Question

which piece of text uses this meaning of certain? certain adjective definite but not specified \are you absolutely certain that this is the most direct route to the airport?\ ms. weber asked the taxi driver. \im running a bit late.\ monica smith, the newest addition to our acting troupe, has a certain something that audiences love.

Explanation:

The first usage of "certain" means sure or confident. The second usage of "certain" means definite but not specified as it refers to an unnamed quality that audiences love.

Answer:

Monica Smith, the newest addition to our acting troupe, has a certain something that audiences love.