The verb that follows the relative pronoun 'that' should agree with its antecedent. Since 'organisations' is a plural noun, the verb should also be plural.
So, option (a) is incorrect.
Option (b) is incorrect because the -ing from pf verb requires a helping verb before it, which is not the case in the given sentence.
Option (c) is incorrect as the sentence is the general statement about the phrase non-governmental or non-profit. So, the verb in past tense would not fit here.
Hence, 'comprise' is the most appropriate verb to be filled in the blank.
Hence, option (d) is the answer.