The best source of internal motivation is from
a. relaxation.
b. positive self-talk.
c. a good job.
d. coworkers' approval.

Select the clause from the drop-down menu that correctly completes this sentence. thomas edison lived and worked in new jersey.who is best known for inventing the light bulb,who is best known for inventing the light bulb,who is best known for inventing the light bulb,