I believe it is A or D. since "<span>Scientific bias is the assumption that a </span>theory<span> is true or false without evidence one way or another, or the attempt to dismiss or discourage research efforts to confirm or deny the </span>theory<span> "</span>
Answer:
it's SN1 reaction,
it's takin double step to complete,first formation of carbocation and then attack of reagents,so it's SN1!
B
A qualitative observation describes the characteristics of a substance without quantifying them.
