Question

\efficacious\ means?
on time
taken quickly
good at making something

Explanation:

The word "efficacious" means effective or successful in producing a desired result, which can be related to being good at making something (in the sense of producing a desired outcome or product). "On time" relates to punctuality, and "taken quickly" relates to speed of taking, neither of which match the meaning of "efficacious".

Answer:

The correct option is: good at making something (the third option).