The table shows the genotypes of 3P plants for the ALLELE for height which prediction about the three plants is the most reasonable and on the table. We have plant a as small TT plant B it's capital TT and plant C is a capital T and a small T would be answer. Be plant a will be the tallest plant a plant C will have similar heights or Plan B, and plant C will have similar heights or plant C will be the shortest.
The most reasonable prediction based on the genotypes of the plants is:
Plant A (TT) will be the tallest plant
Plant B (TT) and Plant C (Tt) will have similar heights
Plant C (Tt) will be the shortest plant