Answer:
He needs to find out if his company as well as other companies can provide the complements.
Step-by-step explanation:
The complementary products are the products that are used with the another product
Since in the question, it is mentioned that the new complementors are available for the firm products based on this the Euan reaction is that to determine his company and along with other company are providing the complements or not due to which he is able to analyze the level of competition
Hence, the last option is correct