Mahatma Gandhi`s opposition to separate electorates for untouchables can be attributed to his belief that it would ensure their bondage in perpetuity. This means that having separate electorates would further isolate and marginalize the untouchables, making it difficult for them to integrate into mainstream society and break free from the discrimination they faced. Gandhi advocated for the upliftment and empowerment of the untouchables and believed that separate electorates would hinder their progress.

Option 2 suggests that Gandhi was apprehensive about offending conservative high caste Hindus by opposing separate electorates. While Gandhi did strive for peaceful coexistence and harmony among different castes, his primary concern was the welfare and rights of the untouchables. He did not base his decisions solely on the fear of offending others.

Option 3 suggests that Gandhi`s opposition to separate electorates would weaken his position as a leader. However, Gandhi`s leadership was not dependent on supporting or opposing separate electorates. His leadership was based on his principles of non-violence, civil disobedience, and inclusive social reform.

Therefore, the correct answer is option 1 as it accurately reflects Gandhi`s opposition to separate electorates for untouchables.