Which sentence contains a subordinating conjunction? a. sentence 4- he felt he had no choice. b. sentence 3- although he was embarrassed, jack called his mother. c. sentence 2- the car needed a new battery, and jack was broke. d. sentence 1- jack had been without a car since monday.

“Although he was embarrassed, Jack called his mother” contains a subordinating conjunction.

Subordinating conjunction is a conjunction that introduces a subordinate clause, e.g., although, because.

The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

The sentence that contains a subordinating conjuction is: Although he was embarrassed, Jack called his mother.

The subordinate conjunction has two functions. First, it provides a necessary transition between the two ideas in the sentence. This transition will show a time, place, or cause and effect relationship.  Its second function is to reduce the importance of one clause so that a reader understands which of the two ideas is more important.