Answer: (C) Horizontal
Step-by-step explanation:
The horizontal integration is one of the process in which the various types of organization or companies are increasing the overall amount of production of the products and the services in the supply chain.
The main purpose of the horizontal integration is to maintain the growth the of an organization by increase the level of product differentiation and also decease the competition in the market.
According to the given scenario, the horizontal integration is one of the concept that best illustrating about the merging process with the other competitors in the market at the similar stage in the value chain management.
Therefore, Option (C) is correct answer.