Question

The sun rose. The fog disappeared. (join into simple sentence )​

Answer 1

Answer:

→ As the sun rose the fog disappeared.

Answer 2

As the sun rose, fog disappeared.

Explanation

• First, the sun rises, afterward, it's heat let the fog disappear. Hence: the correct conversion would be:

"Once the sun has risen, the fog disappeared."

• If we were to change 'once' to 'as', for example, then there is no need for temporal contrast

• It could be also phrased as The sun has risen, the fog disappeared, but it is not generally preferred in daily use.

• Because the two activities are happening more simultaneously
• than one after the other: "As the sun (gradually) rose, the fog (gradually) disappeared."

Hence, As the sun rose, fog disappeared is the correct simple sentence.