Final answer:
The correct way to combine the sentences with a coordinating conjunction is: 'My friends all have a part in our class play, and they spend hours rehearsing every day.' The correct option is b. my friend all have a part in our class paly, and they spend hours rehearsing every day
Step-by-step explanation:
To correctly combine the given sentences using a coordinating conjunction, you should use a comma before the conjunction when connecting two independent clauses. In this case, both clauses are independent because each can stand alone as a complete sentence.
The correctly combined sentence using a coordinating conjunction is: My friends all have a part in our class play, and they spend hours rehearsing every day.
This follows the rule outlined in section 11.2 on commas, where we use commas with coordinating conjunctions to join two independent clauses. The coordinating conjunction 'and' is appropriate here since it is adding information that complements the first clause.
The correct combination of the two sentences using a coordinating conjunction is:
My friends all have a part in our class play, and they spend hours rehearsing every day.
By using the coordinating conjunction 'and', we are able to combine the two independent clauses into a compound sentence that expresses the actions and attributes of the subject, 'my friends'. The comma before the coordinating conjunction is used to separate the two main clauses.
The correct option is b. my friend all have a part in our class paly, and they spend hours rehearsing every day