Answer
(a) Strong
(b) Weak
(c) Weak
(d) Weak
(e) Strong
Work Step by Step
There are only a few strong common bases:
$Li(OH), NaOH, KOH, RbOH, CsOH, Ca(OH)_2, Ba(OH)_2, Sr(OH)_2, NH_2^-$.
- The most effective way to know is searching in the internet, or looking in a table of strong acids and bases.