Answer: Na produção 4, T.val e F.val são sintetizados.

## Explanation In syntax-directed translation, attributes can be either **synthesized** or **inherited**: - **Synthesized attributes**: Computed from child nodes to parent nodes (bottom-up) - **Inherited attributes**: Computed from parent nodes or siblings to child nodes (top-down or sideways) Let's analyze each option: **Option A**: In production 4 (T → T₁ * F), T.val is synthesized because it's computed from its children T₁.val and F.val. F.val is also synthesized because it comes from its own production rules. **This is CORRECT**. **Option B**: In production 4, T₁.val is NOT inherited - it's synthesized. T₁ is a non-terminal on the right side, and its value comes from its own subtree. **Option C**: In production 5 (T → F), T.val is synthesized from F.val, and F.val is synthesized from its own production rules. Neither is inherited. **Option D**: In production 2 (E → E₁ + T), E.val is synthesized (computed from E₁.val and T.val), but T.val is NOT inherited - it's synthesized from its own subtree. **Option E**: In production 2, E₁.val is synthesized (comes from its subtree), but T.val is NOT inherited - it's synthesized. **Key points**: - In this grammar, all attributes are **synthesized attributes** - The grammar uses only synthesized attributes, which is typical for simple arithmetic expression evaluation - Inherited attributes would be needed for more complex translations like type checking or symbol table management - The computation flows bottom-up: from leaves (digits) up to the root (L)

Author: Danyel Barboza