The correct option is A It's better to keep what you have than to risk it and lose it.
A proverb is a short saying that states a general truth or advice. They're popular as they are told and retold through generations, incorporated in books and stories that grandparents narrate to children. Proverbs have a deeper meaning than the one on the surface. The correct meaning of the given proverb is option A, as it explains that having one bird or an asset close to you has more value than the birds/assets that you don't have. In a bid to gain something more, you may lose something you already have and end up with nothing. Hence, option A is correct. The rest of the options don't provide the actual meaning of the proverb, they don't explain the worth of the asset you have, hence options B, C and D are incorrect.