The correct option is D Brassica campestris
Tetradynamous is a condition of androecium where six stamens are present of which four stamens are longer and are inserted in inner whorl and remaining two are smaller and are inserted in outer whorl.
Cruciform corolla is a type of corolla containing four free petals arranged in the form of a cross.
Solanum tuberosum flower contains five fused petals forming a infundibulum form corolla.
Abelmoschus esculentus and Ochroma lagopus belongs to family Malvaceae. Both contain five free petals.
Brassica campestris flower possess four free petals forming a cruciform corolla (arranged in the form of a cross).
Therefore, the correct answer is option D.