Web making by spiders is an example of which of the following a. innate behavior b. courtship c. defensive behavior d. reproducing

It's innate behavior. <<<<short answer

C. It's not defensive. It's meant to trap food. Spiders are carnivores and they eat what they catch.  Webs are sticky and their pray can't get away. 

A. Webs are constructed out of different types of silk, depending on what the web is for. The only thing you can eliminate is C. The silk itself is attractive to the opposite sex so courtship is a possibility. After the spider reproduces, the egg can be placed in a very dense covering of silk. 

A is the all encompassing answer to the 11 things webs their silk are used for by spiders.
A <<<< answer. 

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.