It looks like you're presenting two sentences with grammatical issues and providing multiple-choice options (A, B, C, D) for possible corrections. Let me provide the corrected versions of each statement:

1. **Original Sentence**: "Learning languages are more difficult than learning Maths."
- **Correction**: "Learning languages is more difficult than learning Maths."
- **Reason**: The subject "Learning languages" is considered singular for the purposes of the verb "is."

2. **Original Sentence**: "My sister doesn’t like doing gardening, but she isn’t patient enough because."
- **Correction**: "My sister doesn’t like doing gardening, and she isn’t patient enough."
- **Reason**: The conjunction "but" is typically used to contrast ideas. The sentence as it stands does not provide a contrast, making "and" more appropriate.

If you have specific answers for options A, B, C, and D for these corrections, please provide them, and I can help identify the correct answer!