Which option identifies what is being researched in the following scenario? Engineers at Siemens are researching the use of thermoelectric generators to produce carbon-neutral electricity in environments with temperatures between 200°C and 300°C.

acid mine drainage
effective use of waste heat
impacts of seismic waves
absorption of pollutants

answer:

design model: consists of design geometry; can be 2d or 3d; typically has a black background.

design files: drawing created with microsoft expression design, a drawing and design program for windows; may contain both vector and raster graphics; can also include multiple layers and various image effects.

elements: an element is a single part of a larger group.

answer:

i am not 100% sure but i think it is a.)

dont take my word for it

explanation: