Answer:1: The -s inflection indicates that monotremes is a plural noun.
2: The suffix -ic indicates that holoblastic is an adjective.
3: The suffixation in the word segmentation is a noun-forming suffix denoting a process.
Explanation: 1: Noun "monotreme" is inflected for number (to make it plural). Inflecting a noun is called declension. Declension of a noun by -s is the most common method to make it plural.
2: Suffix -ic is added with holoblast to make it an adjective. Holoblastic segmentation is complete cleavage divinding the whole egg into distinct and separate blastomores.
Suffix -ic is usually used after Greek and Latin words to make their adjectives.
3: Suffix -ation is combination of two suffixes -ate and -ion to make (process) nouns from root words.
4: Last option (The -s inflection indicates that monotremes is a possessive noun) is NOT correct because there is no possession of monotremes. "monotremes" is simple plural noun.