Choose the most appropriate affirmative form of the sentence given, from the options provided.
Hurry up so that you don't miss your class.

Correct option is B

The correct option is (b) Hurry up, lest you should miss your class.

Explanation:
The original sentence uses the structure so that you don't, which expresses a negative purpose — the speaker wants the listener to hurry in order to avoid missing the class. To express the same meaning in a different structure, the conjunction lest is used.

Key Grammar Rule – Use of LEST:

• Lest is a conjunction meaning for fear that or so that... not. It is always followed by should (or might in some constructions) — never by don't / doesn't / won't.
• Structure: [Imperative / Clause], lest + subject + should + V₁
• Example: Walk carefully, lest you should fall.

• (a) Miss your class, if you don't hurry up – Reverses the imperative and makes it conditional; changes the intent of the original sentence.
• (c) Hurry up and don't miss your class – Uses two separate imperatives joined by and; does not convey the purpose or consequence relationship of the original sentence.
• (d) Don't hurry and don't miss your class – Completely changes the meaning; tells the listener not to hurry, which is the opposite of the original.