Jobs and markets in the informal sector are
a.
not regulated or taxed
b.
operated in accordance with tax procedures
c.
established with government oversight
d.
regulated closely by governments
answer is a

A.  not regulated or taxed

Explanation:

is NOT c sorry friend

the answer is A like said in the question they put down  

i did not see that until i submitted my answer and got it wrong and it showed me the correct answer which was indeed letter A

have a fabulous day my beautiful ones (:

tunami b/c it is near water

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.