Select the option in which all the words are spelt correctly.

Ritu is deficient in calcium.

The option in which all the words are spelled correctly is Ritu is deficient in calcium.

The word "deficient" means lacking in something, especially something essential. The word "calcium" is a mineral that is essential for strong bones and teeth.

The other options have the following spelling errors:

• "Defecient" should be "deficient".
• "Defisient" should be "deficient".