Which of the following is a correct statement about the production of shale oil in the u. s.?
question 44 options:
a)
if political factors make petroleum expensive or impossible to obtain, the use of shale oil might increase.
b)
development of new technology that reduces the cost of extracting shale oil is impossible due to environmental dangers.
c)
if petroleum becomes more expensive due to dwindling supplies, shale oil use still won't be economically feasible since it is so expensive to produce.
d)
shale oil is an abundant resource and it is currently less expensive than petroleum to produce, but is not widely used.

Read the excerpt from eighty years and more. until i was sixteen years old, i was a faithful student in the johnstown academy with a class of boys. though i was the only girl in the higher classes of mathematics and the languages, yet, in our plays, all the girls and boys mingled freely together. in running races, sliding downhill, and snowballing, we made no [division] of gender. true, the boys would carry the school books and pull the sleighs up hill for their favorite girls, but equality was the general basis of our school relations. i dare say the boys did not make their snowballs quite so hard when pelting the girls, nor wash their faces with the same [forcefulness] as they did each other's, but there was no public evidence of [favoritism]. which detail supports the central idea that stanton feels females and males were generally treated equally at johnstown academy? until i was sixteen years old, i was a faithful student . . i was the only girl in the higher classes of mathematics . . [t]here was no public evidence of [favoritism]. true, the boys would carry the school books . .