Identify the segment in the sentence which contains a grammatical error. The old lady finds it difficult to climb the steep steps of the train and asked for help.?

Option 1 : finds it

The erroneous segment in the sentence is finds it . 

• In the given sentence, the improper use of parallelism is there .
• Parallelism is the practice of lining up all your verb tenses when you have a list of them in one sentence.
• When two or more verbs have the same subject the verbs must be parallel.
  • In the above sentence , The old lady is the only subject for 2 verbs used in the sentence i.e. finds and asked. Both are indifferent tenses finds is in V1  and asked is in V2 form.
• Therefore as per the rule of conjunction with parallelism, the above sentence should be in the simple past tense as in accordance with the verb asked. 
• The structure of simple past tense: Subject + V2.
• Hence, instead of finds it , we will use found to make the sentence grammatically correct.
• So, the correct answer is Option 1.