Hint: While some plants spread asexually, many plants have reproductive organs. This results in a wide variety of flowers, some with both male and female organs.
Complete answer: A flower, is the main reproductive structure found in flowering plants (also known as angiosperms).
The ultimate function of a flower is reproduction, and it does that by providing a mechanism for the union of sperm with eggs. Flowers also facilitate the process of outcrossing (i.e. fusion of sperm and eggs from different individuals in a population) or allow self-fertilization (i.e. fusion of sperm and egg from the same flower).
Flowers contain sporangia and are the site where the gametophytes gradually develop. After fertilization, the ovary of the flower develops into the fruit (that contains seeds) in the post-fertilization changes. The flowers often have colored and attractive corolla mainly to attract pollinators such as bees and other such insect pollinators. Then these insect pollinators inadvertently carry the pollen of one flower to another flower, where the ovum (eggs) from the female part of the flower gets fertilized.
If the plant is a fruit-bearing plant, once the ovum is fertilized, a fruit will grow from the flower.
In case it is not a fruit-bearing plant, the flower will produce seeds, which will be dropped or be scattered by wind or animals to further facilitate the growth of a new plant.
So, the correct answer is ‘Produce offspring’.
Note: The flowers are the most attractive parts of the plants with characteristic smell/scent to attract pollinator insects. Flowers also provide a safe space for the ovule as well as the developing embryo inside a receptacle.