Assertion Analysis: Timing of Early Language Skills

The assertion states that there's a difference in when children start babbling and forming two-word sentences. Some children achieve these language development milestones around 12 months of age, while others might reach them as late as 20 months. This observation highlights the natural variability seen in child development.

Reason Analysis: Understanding Developmental Milestones

The reason explains that development milestones are not strict deadlines but rather general guidelines. It correctly points out that each child grows and develops at their own pace, leading to significant variations in their individual developmental timelines. This means a range of ages is considered normal for achieving specific skills.

Relationship Between Assertion and Reason

The reason provided directly explains the assertion. The variation in the timing of babbling and two-word sentences mentioned in the assertion (A) is precisely because development is individual and milestones are only suggestive, as stated in the reason (R). Therefore, (R) offers a correct explanation for why the situation described in (A) occurs.

Conclusion: Evaluating the Statements

Based on the analysis:

• Assertion (A) is true, as observed variations in language acquisition timing are common.
• Reason (R) is true, as developmental milestones do allow for individual differences.
• Reason (R) correctly explains Assertion (A) by stating the underlying principle of developmental variability.

Thus, the correct option is that both (A) and (R) are true, and (R) is the correct explanation of (A).

Correct Option: 1. Both (A) and (R) are true and (R) is the correct explanation of (A).