Topic: Degree of Comparison,

Best Answer Explained in Below-:

The sentence "Alam is the best in the class" indicates that Alam's performance or abilities surpass those of all his classmates. To express this idea in comparative terms, we need to convey that Alam excels compared to others, rather than just stating he is the best outright.

Option A: "Alam is better than any other boy in the class" successfully translates the superlative "best" into a comparative form by stating that for any boy considered, Alam's abilities are superior. This retains the original meaning of Alam being at the top compared to his peers.

Option B: "Alam is better than most other boys in the class" implies that while Alam performs better than the majority, there could be some boys who perform as well or better, which dilutes the original meaning.

Option C: "Alam is better than all other boys in the class" is also a strong candidate but lacks the precise implication that subtle distinctions between individual boys might exist, as "any other boy" does.

Option D: "Other boys in the class are better than Alam" contradicts the original statement.

Thus, Option A captures the essence of the original statement by establishing a clear comparative relationship.