As a result of developments in the workplace
a. the number of jobs for unskilled workers has risen.
b. skills and skill levels required for success are about the same as they were in 1900.
c. all citizens need better education.
d. today's worker does not need to worry about learning new skills.

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."

because you can no longer feel the bubbles or hear the waves.

some values of this culture might be marriage, the environment, intelligence, and cows and bulls.

-agarvated team