Respuesta :
Answer:
1) While she was studying, her dog began to lick her elbow.
4) Without a doubt, she was the fastest in her heat.
Explanation:
In the given sentences, the sentence structure acts a great deal in determining if the sentences are right or wrong. At first glance, it may be difficult to ascertain whether they are right or wrong. But when looked carefully, there are certain indications that will show what is correct and what is wrong.
First, the correct answers are option 1 and 4 for they are two sentences which have clauses that are correctly used and stated. The two sentences begin with a conjunction, and also act as dependent clause adding extra information to the main clauses.
Whereas, in option 2, there is no need for the use of the comma after elbow.
Also, the use of however in option 3 is invalid for it presents no contrasting or opposing sentence to the original statement.
Thus, the correct answer are options 1 and 4.