**Core Concept**
The Employees' State Insurance (ESI) scheme is a social security and health insurance scheme for Indian workers. It provides various benefits to insured persons, including medical, disability, and cash benefits. Cash benefits are monetary assistance provided to insured persons during specific periods of incapacity.

**Why the Correct Answer is Right**
Cash benefits in the ESI scheme include cash compensation for sickness, maternity, disability, and employment-related injury. These benefits are designed to support insured persons during periods of financial hardship due to illness or injury. The ESI scheme provides cash benefits to ensure that insured persons have a steady income during their recovery period.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not specify the type of benefit provided by the ESI scheme.
**Option B:** This option is incorrect as it is not a cash benefit provided by the ESI scheme.
**Option C:** This option is incorrect as it is not a cash benefit provided by the ESI scheme.

**Clinical Pearl / High-Yield Fact**
Cash benefits in the ESI scheme are payable for a maximum period of 91 days in two consecutive benefit periods.

**Correct Answer: C. Cash compensation for sickness, maternity, disability, and employment-related injury.**