How can variety be brought into a monochromatic picture?

Correct answer: By changing value

The direct answer is B: changing value. A monochromatic picture uses one colour family, but that does not mean every part must have the same lightness or darkness. Value means how light or dark a colour appears. Step by step: keep the hue or colour family the same; make some areas light, some medium, and some dark; use these value changes to separate forms, create emphasis, and add visual variety. Option A, changing paper, may alter the background but does not create variety within the monochromatic colour treatment. Option B is correct because different values of one colour produce contrast and interest while keeping the picture monochromatic. Option C, erasing the title, has no necessary effect on the picture’s colour variety. Option D, ringing a bell, is unrelated. Memory cue: monochrome keeps the hue, while value may move from light to dark.