<span>A subject directory is created and maintained by human editors, that </span><span>review and select sites for inclusion in their directories on the basis of previously determined selection criteria. </span>
Answer:
To add integers having the same sign, keep the same sign and add the absolute value of each number. To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest.
Explanation:
Setting (b) goes with 1st sentence.
characters (d) goes with 2nd sentence.
c with 3rd sentence .
e goes with 4th sentence.
a goes with last sentence.
