Question

Over-exploitation of groundwater has lead to water levels falling drastically and draughts being caused.

• A. has been led to water levels is falling drastically
• B. was leading water levels to be fallen drastically
• C. has led to water levels falling drastically
• D. was being led to water levels fell drastically
• E. No correction required

Answer 1

The correct option is C has led to water levels falling drastically

'Led' is the correct past participle. 'Lead' is present form which will not be used with 'has.'
e.g. This policy has led the business to new heights.