**Question:** In census literacy rate is assessed by -

A. Number of people who can read and write
B. Number of people with a university degree
C. Number of people with a specific skill set
D. Number of people who can understand a questionnaire

**Core Concept:** Literacy rate is a crucial indicator used in assessing public health and education systems in a country or region. It is defined as the percentage of the population that can read and write.

**Why the Correct Answer is Right:** Census literacy rate is determined by calculating the number of individuals who possess the basic skill of reading and writing. This measurement helps policymakers and healthcare professionals understand the level of public education and develop appropriate strategies to improve literacy rates.

**Why Each Wrong Option is Incorrect:**

A. **Number of people who can read and write (Option A)**: This option is partially correct but focuses only on a subset of literate individuals. The correct answer should encompass the entire literacy rate, not just those who can read and write.

B. **Number of people with a university degree (Option B)**: This option is not relevant to assessing literacy rate as it focuses on individuals with a specific educational background rather than those who can read and write.

C. **Number of people with a specific skill set (Option C)**: This option is incorrect as it broadens the concept of literacy beyond reading and writing skills, making it imprecise for assessing the overall literacy rate.

D. **Number of people who can understand a questionnaire (Option D)**: This option is too broad and does not accurately represent the concept of literacy rate, which is focused on reading and writing skills.

**Clinical Pearl:**

The correct method of assessing literacy rate is by counting the number of people who can read and write, as this encompasses the broader understanding of literacy and its impact on an individual's ability to access information and participate in society effectively.

**Correct Answer:** A. Number of people who can read and write