Here's why:

* Strong bases have a pH greater than 7. A pH of 1 to 7 indicates an acidic solution.

* The other options are true:

* A. are metal hydroxides: Strong bases are often metal hydroxides, like NaOH (sodium hydroxide) and KOH (potassium hydroxide).

* C. dissociate in water: Strong bases dissociate completely in water, releasing hydroxide ions (OH-) which make the solution basic.

* D. conduct electricity well: The presence of ions in a solution allows it to conduct electricity. Strong bases, with their high concentration of ions, are good conductors.