Assertion (A) : While some children start babbling and uttering two word sentences at 12 months, others don't do this till they are 20 months old.
Reason (R) : Development milestones are only suggestive and development of individual children can be quite varied.
Choose the Correct option :

Question

Accepted Answer

Option 1 is the correct answer because both the assertion (A) and the reason (R) are true, and the reason (R) provides a valid explanation for the assertion (A).

1. **Explanation for Option 1:**
   - **Assertion (A):** It states that while some children start babbling and uttering two-word sentences at 12 months, others do not do this until they are 20 months old. This is a true statement as it reflects the natural variability in the development of language skills among children. Children develop at their own pace, and there is a wide range of what is considered "normal" in terms of reaching developmental milestones.
   - **Reason (R):** It explains that developmental milestones are only suggestive and that the development of individual children can be quite varied. This is also true, as developmental milestones serve as general guidelines rather than strict timelines. They help in identifying typical patterns of development but acknowledge that each child is unique.
   - The reason (R) directly explains the assertion (A) by highlighting that the variability in when children reach milestones, such as babbling and forming two-word sentences, is due to the fact that these milestones are suggestive and not prescriptive. Therefore, (R) is the correct explanation of (A).

2. **Explanation for why other options are incorrect:**
   - **Option 2:** This option suggests that both (A) and (R) are true, but (R) is not the correct explanation of (A). However, as explained above, (R) directly addresses the variability mentioned in (A) by explaining that developmental milestones are suggestive, making (R) the correct explanation for (A).
   - **Option 3:** This option claims that (A) is true but (R) is false. This is incorrect because (R) is indeed true. Developmental milestones are suggestive, and individual development can vary significantly, which is a well-established fact in child development.
   - **Option 4:** This option states that both (A) and (R) are false. This is incorrect because both statements are true. The assertion accurately describes the variability in language development among children, and the reason correctly explains this variability by pointing out the nature of developmental milestones.

In conclusion, Option 1 is the correct answer because it accurately reflects the truth of both statements and the logical connection between them.