The Question is from the Baltimore Catechism which was developed to teach elementary level Catechism to school children and marginally literate adults. Its answers are very simplistic and incomplete. It was developed in 1885 and was last updated in 1933. It was "retired" in the 1960s following Vatican II.
It is assumed that adults interested in learning the whole and complete Catechism will seek out other, more complete sources including the whole and complete Catechism of the Catholic Church.
heh... I use it for my 5th, 3rd and 1st grade children. I make them memorize the questions and answers too. Just like I make them memorize multiplication tables, the periodic table of elements, parts of speech, presidents of the US (monarchs of England, emperors of Rome... lol), etc. Lists, lists, lists!
The Baltimore Catechism is a great foundational springboard and I haven't found anything better for the instruction of children, even/especially the new CCC. But yes, if my kids are still dependent on the formulas of the catechism they learned as children when they're adults there's gonna be a problem.