Final answer:
Titanium (Ti) is the element that belongs to a different periodic table group than the others; it is from Group 4, while Germanium (Ge), Silicon (Si), and Tin (Sn) are from Group 14.
Step-by-step explanation:
The elements listed can be identified based on their position on the periodic table and the groups they belong to. Germanium (Ge), Silicon (Si), and Tin (Sn) are all elements that belong to Group 14, which is also known as the carbon group or tetrels. These elements, except for carbon, are known to be metallic members or metalloids within this group. Titanium (Ti), however, is different from the others as it belongs to Group 4 of the periodic table, and is a transition metal. Therefore, the element that is from a different periodic table group than the others is Titanium (D).
The elements in Group 14 generally show a trend of having semimetallic or metallic properties and can form divalent cations. However, Titanium, being a member of a different group, exhibits different chemical properties, such as forming compounds in which it has higher oxidation states typical of transition metals.