Final answer:
The amount of loss Albert can claim in 2018 is $80,000.
Step-by-step explanation:
To calculate the amount of loss Albert can claim in 2018, we need to compare the value of the land in 2018 ($100,000) with the amount he expected to receive if the highway was constructed ($180,000). The loss would be the difference between these two values, which is $80,000. Therefore, the amount of loss Albert can claim in 2018 is $80,000.