1

Problem

Until he was cooking dinner, his friends arrived unexpectedly and surprised him.

2

Clue

Subordination and coordination help to combine two sentences giving the value for both sentences.

3

Hint

'While' introduces the subordinate clause and showing the relationship between the two clauses

4

Sumup

Please summarize choices

5

Step

CHOICES

6

Choice-A

Until he was cooking dinner, his friends arrived unexpectedly and surprised him. The sentence is incorrect for the topic of subordination and coordination because the subordinating conjunction "until" is used improperly. The word "until" implies that one action continues up to the point when another happens, but in this sentence, it wrongly suggests that he was not cooking dinner until his friends arrived, which contradicts the intended meaning.

Wrong No change

7

Choice-B

But he was cooking dinner, his friends arrived unexpectedly and surprised him. The sentence is incorrect, "But he was cooking dinner" is treated as if it should contrast with "his friends arrived unexpectedly and surprised him." However, the two parts of the sentence do not contrast independent clauses but rather actions happening at the same time, which requires a different conjunction.

Wrong But

8

Choice-C

While he was cooking dinner, his friends arrived unexpectedly and surprised him. This sentence is correct because it expresses a clear purpose: The word "while" is a subordinating conjunction. indicating that the events in the main clause occurred simultaneously with the action in the subordinate clause.

Correct While

9

Choice-D

Even he was cooking dinner, his friends arrived unexpectedly and surprised him. The sentence is incorrect because "even" is not the right conjunction to use in this context. The sentence aims to show that his friends' arrival occurred simultaneously with him cooking dinner, and "even" does not serve this purpose.

Wrong Even

10

Step

Correct sentence - While he was cooking dinner, his friends arrived unexpectedly and surprised him.

11

Answer

Option C

12

Sumup

Please summarize choices