Answer:
A) the part of the word Leukocyte which means white is Leuko. It is of Greek origin and derived from the word Leuco which means white, or clear.
B) the part of the same word which means cell is -cyte. It also has a Greek origin and derives from the word Kytos which means vessel.
C) The letter (o) is is a vowel. Simply defined, vowels are sounds produced without any restrictions or constraints in the vocal tract. In English language, there are lots of vowel sounds. They are mostly represented by the following letters: a, e, i, o, and u.
D) No. Compound words come in various forms. Compounds words are formed when at least two words are used together to create a new word. They can come with any of the vowel sounds mentioned above. For example:
Moon + Light = Moonlight
Basket + Ball = Basketball
Candle + Stick = Candlestick
As you would note, none of the compound words above have the same vowel sound as the (o) found in Leukocyte.
The vowel sound (o) found in Leukocyte is written as uh. It is similar to the pronunciation found in the following words: up, mother, sun, cut, run etc.
Cheers!