What is the relationship between judaism, christianity, and islam?

a. the three religions all believe in different gods.
b. all three religions accept jesus as the "son of god."
c. unlike judaism and christianity, islam won new converts only by war and force.
d. islam includes much of the old and new testaments in its holy book, the quaran.

"six months ago, several of molly's friends joined the trimtime fitness center. each of them participated in trimtime's weight-reduction and fitness regimen. all reported substantial weight reduction, and all are visibly slimmer. molly is convinced. she joins trimtime and enrolls in the program, hoping and expecting to see the same results. she is especially delighted to learn that trimtime had adjusted its program to make it even more effective in a shorter period of time." what is the feature in question/attribute of interest in this argument?