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Answer is (2).
Xylem transports water, hence the red-coloured water will be transport to other part of the plant through the xylem. Hence, if you cut open the stem, the xylem will be coloured red.
Xylem transports water, hence the red-coloured water will be transport to other part of the plant through the xylem. Hence, if you cut open the stem, the xylem will be coloured red.