Its inventedness uncertainty and futuristic ideas basically deals with science and technology .what is it?

answer; i believe the answer is tls,transport layer security;

look at the engine block shown in the figure. the engine shown in this figure is a/an  

  a. four-cylinder, horizontally opposed engine.

  b. eight-cylinder, v-type engine.

  c. six-cylinder, v-type engine.

  d. four-cylinder, in-line engine