Explanation:

- Let's evaluate the original equation: 32 + 14 × 3 - 91 ÷ 7 = 3.

- Perform operations as per BODMAS/BIDMAS order, which dictates: Brackets, Orders (i.e., powers and roots, etc.), Division and Multiplication (from left to right), Addition and Subtraction (from left to right).

- Original Equation:

$$ 32 + 14 \times 3 - 91 \div 7 $$

$$ = 32 + 42 - 13 $$

$$ = 61 $$

- Let's evaluate each option to find the correct interchange:

Option 1: + and -

$$ 32 - 14 \times 3 + 91 \div 7 $$

$$ = 32 - 42 + 13 $$

$$ = 3 $$

- This makes the equation correct.

Option 2: + and ×

$$ 32 \times 14 + 3 - 91 ÷ 7 $$

- Results in: Incorrect value.

Option 3: ÷ and -

$$ 32 + 14 × 3 ÷ 91 - 7 $$

- Results in: Incorrect value.

Option 4: ÷ and ×

$$ 32 + 14 ÷ 3 - 91 × 7 $$

- Results in: Incorrect value.

- The correct answer is Option 1: + and -.

- Thus, option 1 is correct.