Calculate Gift Wrapping Rate: 7 Gifts/Hour × 20 Hours Problem

To determine how many gifts Sonia wraps in 20 hours when she wraps 7 gifts per hour, we will calculate as follows:

• Step 1: Identify the rate: $7$ gifts per hour.
• Step 2: Identify the time duration: $20$ hours.
• Step 3: Use the formula: Total number of gifts = (Number of gifts per hour) × (Number of hours).
• Step 4: Perform the calculation: $7 \text{ gifts/hour} \times 20 \text{ hours} = 140 \text{ gifts}$.

Therefore, Sonia wraps $140$ gifts in 20 hours.

Comparing this result with the provided choices, we determine that the correct choice is: $140$.