The correct answer is (c) should miss.
Grammar Rule — 'Lest':
'Lest' is a subordinating conjunction meaning 'in order to avoid' or 'for fear that'. After 'lest', the verb in the subordinate clause must be 'should + V1' (base form).
Formula: Main Clause + lest + Subject + should + V1
→ Reza ran fast lest he should miss the train. ✓
Note: 'Lest' already has a negative meaning built in, so the clause after it never uses 'not'.
✗ 'miss' — base form without 'should'; incorrect after 'lest'.
✗ 'missed' — past tense; not used with 'lest'.
✗ 'will miss' — future tense; never used after 'lest'.
Source: Wren & Martin; A Practical English Grammar – Thomson & Martinet.