Answer:
A research hypothesis is also referred to as a "3) Alternate hypothesis."
The alternate hypothesis, often denoted as "Ha" or "H1," is a statement that researchers want to test or support through their study. It represents the idea that there is an effect, a relationship, or a difference between variables being investigated. The null hypothesis (option 2) is a statement that typically represents the absence of an effect, relationship, or difference and is used for comparison during statistical hypothesis testing. Option 1, "Statistical hypothesis," is a more general term that can refer to any hypothesis tested using statistical methods, which could be either the null or alternate hypothesis. Option 4, "Conceptual hypothesis," is not a standard term in hypothesis testing.