Achange in the direction of a wave when the wave finds an obstacle or an edge, such as an opening bending of waves around a barrier is called

A diffracation is the correct answer. :D

This is what i found “in a gas turbine engine, the combustor or combustion chamber is fed high pressure air by the compression system. early gas turbine engines used a single chamber known as a can type combustor. today three main configurations exist: can, annular and cannular (also referred to as can-annular tubo-annular).” i hope this you for what your looking for. can you plz mark me brainliest?

Letter a, because when there are unlike charges they will always attract to each other.