Answer:
A) stratified
Explanation:
Total call including 6500 'yes' and 4100 'no' are 10600 and on each call there was a fifty cent charge. Total charge becomes 5300 $ so this is very straight forward data. And from this test two types of classes are made with cleared population in each class and such cleared population division is example of stratified sampling so this is right answer.
Scientists infer evolutionary relationships by comparing the early development of different organisms by phylogeny.
In scientific terms, the evolutionary relationship and history of an organism or cluster of organisms is termed its phylogeny. It describes the relationships of associate organism, like from that organisms it's thought to own evolved, to that species it's most closely connected, so forth.
Scientists collect information that enables them to create evolutionary relationships between organisms. Almost like a detective work, scientists use proof to uncover the facts. Within the case of phylogeny, evolutionary investigations specialize in 2 styles of evidence which are morphologic and genetic.
To learn more about Phylogeny here
brainly.com/question/1426293
#SPJ4
Add all of the numbers together then multiple the sum to get ur answers
