Which one of the following is the F1 hybrid of tomato?

Answer: Option A

Mangla is one of the given options that is the F₁ hybrid of tomato.
An F₁ tomato hybrid occurs when you have two tomato plants of different varieties and then one is pollinated by the other variety's pollen. The seeds of the resulting cross-pollinated tomato will grow plants that are F₁ hybrids. The children of F₁ hybrids are F₂.
Fruits of the Mangla variety are ready for picking after 65 days of transplanting and are medium having bright skin, and resistant to fusarium, verticillium and nematode.