The correct answer is ten percent. If you use more, then you might get accused of plagiarism or of not saying anything your own at all.
Explanation:
Infinitive phrases include infinitives. ... Examples include, “to walk,” “to read,” or “to eat.” Infinitives can act as nouns, adjectives, or adverbs. As a noun, they might act as the subject of the sentence. For example, “To travel is the only thing on her mind.” As an adjective, they'll modify a noun.
He's hoping to convey the differences and similarities of the German government from governments of the past since that is the purpose of making comparisons. This is for a better understanding of the successes and failures of the German government.
