Which reason provides the best explanation of why a bar graph was selected to show the data in the table? Bar graphs are used to compare separate items. Bar graphs are used when data are continuous. Bar graphs are often used to show mass. Bar graphs are the easiest to construct and to read.

Bar graphs are used to compare separate items. Bar graphs are used when data are continuous. Bar graphs are not good for categorical data. Bar graphs are the easiest to construct and to read.

Explanation:

Bar graphs are used to compare separate items. so its A

Explanation:

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."