What is the most likely cause of visible streaks in an acrylic layer?

Correct answer: The paint load and applied brush pressure are uneven

Visible streaks usually result from uneven paint distribution. If the brush carries different amounts of acrylic colour or is pressed harder in some places, one part receives a thicker or darker film than another, producing bands. Option D is correct. A white ground may affect apparent transparency, but it does not normally create brush streaks; a printed shade name and a clean brush are not causes. Consistent loading and pressure reduce the problem.