ITPEC IP April 2024 Question 5

The missing condition is score greater than or equal to 65: score ≥ 65. The preceding if (score ≥ 80) has already handled every score of 80 or more. Therefore, when execution reaches this elseif, the score is known to be below 80, and testing only the lower boundary score ≥ 65 selects exactly the range 65 through 79.

If that condition is false, the next test score ≥ 50 selects 50 through 64; all remaining lower scores reach Fail. This descending order makes an explicit upper bound unnecessary in each branch.

Answer (a)

Why not others:
- (b) uses OR, so almost every integer satisfies at least one side of the condition
- (c) requires a score to be at most 65 and at least 79 simultaneously, which is impossible
- (d) is true for every score below 80, including scores below 65, so those scores would incorrectly receive B

Key rule: In a descending if/elseif chain, earlier branches exclude higher ranges, so each later branch usually needs only its lower threshold.

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