Identify the segment in the sentence which contains the grammatical error.

Due to heavy rain, the bridge collapsed leads to a huge traffic jam.

The correct answer is- leads to​.

Key Points

• The simple past tense is used to talk about things that happened or existed before now.
• It shows that we are talking about something that has already happened. 
• The structure is given below:
  • Subject + V2 + object.
• Example:
  • ​Wolfgang entered a hula hoop contest.
• As per the given sentence, the instance of collapsing of the bridge took place and this led to a huge traffic jam.
• Hence according to the rule and example given above, 'which led' will be used instead of 'leads' in the part given in the 3rd option.
   

​Correct Sentence: Due to heavy rain, the bridge collapsed which led to a huge traffic jam.

Additional Information

• Some phrases are followed by past indefinite/simple tense as given below:
  • ​It's high time, It's time, It's about time, etc.
• For example:
  • It's high time I start preparing for my final exams.
  • It's high time I started preparing for my final exams.