A baking student started baking a cake. After some time he realised his cake was not rising and hard. This is because he forgot to add the following ingredient:

Correct option is C

The correct answer is (c) baking powder.
• Baking powder is a leavening agent that helps the cake rise and become soft by producing gas. Without it, the cake will be dense and hard.
Information Booster: 

•  Baking Powder: A combination of acid and base that releases gas when mixed with liquid and heat.
• Leavening Agent: Helps create air pockets, making the cake light and fluffy.