In the sentence "the new bakery opens <u>in</u> a week" you only have the preposition IN. A prepositional phrase consists of preposition plus a noun, pronoun or gerund working as the object.
So, the prepositional phrase is "in a week", the object of the preposition is "week" (a noun) which is pre-modified by the indefinite article "a".
D is the correct answer because you are using a connective :)
He divided his studies between music and commercial art, and by 1918 established a reputation as a bandleader and agent. In 1923 he went to New York City and soon became a successful bandleader. In 1927 he secured an important engagement at the Cotton Club in Harlem, a section of New York City, and remained there (aside from occasional tours) until 1932.Ellington's band made its first European trip in 1932. After World War II (1939–45), the band toured Europe regularly, with short trips to South America, the Far East, and Australia. One peak period for the band was from 1939 to 1942, when many critics considered its performances
