It's the second one that's correct...
Answer:
I believe the correct answer is d. all of the above
Nein er hat nicht. Sie können mir später danken!!
Answer:
Stars founded the Hollywood canteen, and volunteered their time.
Stars like Carole Lombard raised millions of dollars in war bonds campaigns.
Stars like Jimmy Stewart joined the armed forces.
Stars like Bob Hope entertained the troops
Explanation:
the combination in one company of two or more stages of production normally operated by separate companies.