A thing that represents or stands for something else, especially a material object representing something abstract.

• A. Formula / Formulae
• B. Symbol
• C. Bonding
• D. Element

Answer: (B)

The idea being tested is how we use signs to stand for something else. A symbol is a thing that represents another idea, object, or quantity, serving as a shortcut to convey meaning without describing it in full. In science and everyday life, symbols help us connect a sign to a concept or item—like a chemical symbol such as H standing for hydrogen, or a heart representing love, or a flag representing a country. The description fits best with the concept of a symbol because it emphasizes a tangible mark or object that stands in for something abstract. The other terms describe specific roles that aren’t about representing something else in this general way: a formula conveys the makeup of a substance, bonding is the interaction between atoms, and an element is a basic type of matter.