His father /forbade him /to go to party/late at night/no error .,,Where is the error in above sentence

Question : Directions: In the following question, some parts of the sentence have errors, and some are correct. Find out which part of the sentence has an error. The number of that part is the answer. If a sentence is error-free, your answer is "No Error".

It is painful to saw that some youngsters are killing time without doing anything useful.

(1) some youngsters are

(2) killing time without doing anything useful.

(3) It is painful to saw that

(4) No Error

Option 1: 1

Option 2: 2

Option 3: 3

Option 4: 4

Question : Select the most appropriate option to improve the underlined segment in the given sentence. If there is no need to improve it, select 'no improvement required'.

His tone was neither of anger nor sorrow.

Option 1: or sorrow

Option 2: no improvement required

Option 3: or of sorrow

Option 4: nor of sorrow