The options you provided seem to be symbols for chemical compounds. Here are their meanings:
- HCl: Hydrochloric acid (a solution of hydrogen chloride in water)
- MgBr: This likely refers to magnesium bromide (MgBr₂), which is a compound made of magnesium and bromine.
- NaCl: Sodium chloride, commonly known as table salt.
Since you have specified "Select the element," it's important to note that none of these options represent a single element from the periodic table. However, if you are looking for a compound that consists of simpler substances, NaCl is a widely known compound derived from two elements, sodium (Na) and chlorine (Cl).
If you meant to ask for a specific element based on your choices, please clarify your options or intent.