Precipitate formation during chemical reaction is indicated by this arrow : 

A precipitate is a solid substance that results from the blending of two solutions, according to one definition. Arrows are used instead of words and sentences to represent various specialties in chemical reactions and equations.

The upward arrow denotes the formation of a gas, which will escape from the solution as the product. As a result, choice a.) cannot be the solution.

The reactants are on the left side, and the product created is on the right side, according to the arrows pointing in the right direction. In reality, whether the arrow points left or right, the reactants are on the tail and the products are on the head side.

Therefore, choices b) and d) will likewise not be appropriate responses.

The product will naturally precipitate out of the solution, according to the upward arrow. This indicates that the substance will immediately precipitate out as it forms.

So, the correct answer is “Option C”.