Answer:
3rd or 4th answer is correct
It is easier to determine this if we draw the structural formula of lactic acid as shown in the attached picture. There are three functional groups in lactic acid: carboxyl group, hydroxyl group, and the parent alkane chain. Any of the hydrogens in the alkane chain is the least acidic. Then, it is followed by the H in the hydroxyl group. The most acidic is the H in the carboxyl group.
The answer we be C. which is karst topography.
When you're being held hostage, you're going to want to have low resistance. Sure, it's not going to guarantee you'll live, however, it'll surely buy you time for support, think for a plan, and sadly delay your demise. High Resistance during workouts for better muscle. In contrast though, do you mean electrical resistance? That would be a different answer.