Bye I'm leaving... people take my points...

Silverpoint is a. a technique using the blackish residue of impure carbon obtained by removing water from animal and vegetation substances. b. a technique involving the use of a metal point, and a thin silver wire, popular in the 14th and 15th centuries. c. a printmaking technique born from crayon manner that imitates the appearance of chalk lines. d. a technique used since the 16th century involving a stick filled with either colored or black graphite, a heated mixture of carbon and clay

What is the spelling word that fits the meaning. not proper

After joseph niepce developed the first  -sizedcamera in 1826, several individuals enhanced his invention by creating ways to capture and  storesharepermanent photographs. some changes were made to the camera itself. other changes were made to the film. 1987, fuji produced the first  instant film disposable electronic  camera.