Does anyone know what this means?

Select the word from the list that best fits the definition unreasonably stubborn

An __is one of earth 's major. land ecosystems with it s own characteristics animaials animal ,plants,soil ,and climate

Which version of the sentence is most precise? at this point in time, taking a vacation would not be the wisest decision you could make. taking a vacation now would not be very wise. at this time, you should really not even consider the taking of a vacation. taking a vacation, in my opinion, would not be wise now.