Answer:
1. the most important
2. more difficult
3. easier
4. as essential as
5. a helpful
Step-by-step explanation:
When using adjectives in the comparative form, we will need the word "than". Depending on what we mean to say, we will describe something as being more / less + adjective + than something else. The word "than" appears in sentences 2 and 3, showing us that we should use the comparative form:
2. Securing a distributor before she/he can see a finished product is more difficult than when you have a finished film.
3. It is easier to find a foreign distributor than a domestic one.
Another comparative form of an adjective may require the use of "as ... as". In this case, one thing is not more or less than another. They are equal when it comes to that quality. That is the case with number 4:
4. Making a film trailer is as essential as designing a poster for your film.
The superlative will affirm that something is the most + adjective + of a certain group. Therefore, this time we can look for a "of something" as a clue to the use of superlative. That is the case with number 1:
1. Distribution is the most important stage of the filmmaking process.
Finally, when none of the above applies to the sentence, that most likely means we do not need to change the adjective at all. We can simply use it in its positive form:
5. Holding your own screening and premiering your film to invited distributors is a helpful tool in its distributing.