Answer:
D. treating customers with respect
Explanation:
I just took the test. Got it right 100%.
I think The Mathematical Jewel (1585) was his most popular and influential publication. The “Jewel” of the title was an astrolabe designed by Blagrave and considered superior for its time. The title page (shown above) proclaims the book’s contents:
The mathematical ievvel, shewing the making, and most excellent vse of a singuler instrument so called: in that it performeth with wonderfull dexteritie, whatsoeuer is to be done, either by quadrant, ship, circle, cylinder, ring, dyall, horoscope, astrolabe, sphere, globe, or any such like heretofore deuised: ...
All you have to do is rewrite you idea in your hypothesis.