Select the wrongly spelt word.

Hinderance

The wrongly spelled word is "Hinderance"

Explanation:

1. Tranquillity: Correctly spelled. It refers to a state of calmness, peace, and quiet.

2. Conscientious: Correctly spelled. It describes a person who is diligent, thorough, and takes their responsibilities seriously.

3. Hinderance: Incorrectly spelled. The correct spelling is "Hindrance." It refers to something that causes delay, obstruction, or interference.

4. Quarrelled: Correctly spelled. It is the past tense of the verb "quarrel," which means to have an argument or disagreement.