Placentation in tomato and lemon is
Parietal
Free central
Marginal
Axile
The ovary is multilocular and the ovules are carried on the central placenta in both the tomato and the lemon. The axile placentation is the name given to this kind of placentation. Hibiscus, Allium, and Solarium also exhibit axile placentation in addition to tomato and lemon.
The right response is therefore "Axile."