World war 2 increased opportunities for women

a. most men were striking for higher wages.

b. there were few jobs available for men.

c. only about half of all women in their 20s were sent
to combat.

d. industry desperately needed more workers.

It was D. Industries were desperate to get workers as mainly all of their male workers had to go to war. I hope it helped.

True blindness may be caused by trauma to the eye, severe conjunctivitis due to  ibr (infectious bovine rhinoceros) or pink eye or other infections, leptospirosis, lead poisoning, selenium toxicity, fungal infections, vitamin a  deficiencies, rabies, vitamin b12 deficiency, neoplastic of the orbit or  conjunctiva, cataracts, congenital malformations, etc.