Sex form in most cucurbits including melons is

Answer: Option B

Sex form in most cucurbits including melons is Monoecious.
Within the Cucurbitaceae family, most of its species develop unisexual female and male flowers.
The majority of the cucurbits exhibit monoecious conditions. Andromonoecious form Muskmelon and some cultivars of watermelon produce both male and bisexual flowers in a plant.