In the following passage, there are blanks each of which has been numbered. These numbers are printed below the passage and against each four groups of words have been suggested, one of which fills the blanks appropriately.

Which word perfectly fills up blank number 23?

It's nearly spring and it's time to grow plants. Of course, not all plants are (20) .........in season. This makes it very (21) ......... to pick the best plants to grow. The good news is that there are tons of choices. Do you know that plants can grow in nearly every climate? It's true that some plants are picky but most are super (22) ......... and only require water, dirt and of course sun.This spring is the (23) ......... time to start your own garden. There are three amazing plants that work in every single climate. The first is spinach. Spinach is very easy to grow because it (24) ......... water well and can stand different levels of heat. The second is carrots. There are many types of carrots you can grow. Most carrots are very quick to grow and also (25) ………. all types of climates as well. The third is tomatoes. There are tons of different types of tomatoes. It's easy to find the perfect tomato for any location.  Go plant some plants !