Which vitamin can be toxic in excess and increase the risk of birth defects?

Which hotel do you think is most likely to move ahead in market competition? a. a hotel that provides basic amenitiesb. a hotel that provides luxurious amenitiesc. a hotel that shows understanding of customers' latent needsd. a hotel that gives discounts

The word belongs in a different group than all of the other words in the list.

Which would stop hardy-weinberg equilibrium from happening?