Correct Answer: 435

Solution : Given:
1. come home soon ⇒ 444
2. are you coming ⇒ 336
3. raining badly outside ⇒ 757

Write the number of letters present in each word of come home soon to obtain the required code –
The number of letters in come is 4, in home is 4, and in soon is 4.
Thus, come home soon is coded as 444 .
And, are you coming is coded as 336 –
The number of letters in are is 3, in you is 3, and in coming is 6.
Thus, are you coming is coded as 336 .
And, raining badly outside is coded as 757 –
The number of letters in raining is 7, in badly is 5, and in outside is 7.
Thus, raining badly outside is coded as 757 .
Similarly, follow the same pattern for kids are happy –
The number of letters in kids is 4, in are is 3, and in happy is 5.

So, kids are happy is coded as 435 . Hence, the second option is correct.