Final answer:
When s equals 1 in the equation h=s+30, the value of h is found to be 31 by simply substituting s with 1 and adding 30.
Step-by-step explanation:
To find the value of ℓ when s=1 in the equation ℓ=s+30, we simply substitute the value of s into the equation:
ℓ = 1 + 30
ℓ = 31
Therefore, the value of ℓ when s=1 is 31, which corresponds to option A.