In which one of the following sentences is capitalization used correctly? a. the meadows of the valley are filled with yellow flowers each spring. b. alphonse, who was born in algeria, spoke both french and english. c. alexandria egypt is named after alexander the great of macedonia. d. alice stood up at her desk and said, "who's for coffee and donuts? "

Let's look at all the options:
A. The meadows of the Valley are filled with yellow flowers each Spring.
here "Valley" should not be capitalized

B. Alphonse, who was born in Algeria, spoke both French and English.
This is correct!!!

C. Alexandria Egypt is named after Alexander the Great of macedonia.
Here "Macedonia" should be capitalized .

D. Alice stood up at her desk and said, "who's for coffee and donuts?"
here "who" should be capitalized as it's a quote.

You didn’t include the multiple choice/ options list