A... is the largest of the intrusive igneous activities A) laccoliths B) batholiths C) lopoliths D) dykes

To determine which option represents the largest of the intrusive igneous activities, let's analyze each term: A) **Laccoliths**: These are dome-shaped bodies of intrusive igneous rock that form when magma intrudes between layers of sedimentary rock. B) **Batholiths**: These are large masses of intrusive igneous rock that have cooled and solidified deep within the Earth's crust. Batholiths are typically larger than laccoliths and can cover hundreds of square kilometers. C) **Lopoliths**: These are similar to laccoliths but are bowl-shaped and form when magma intrudes into sedimentary layers and sinks downwards. D) **Dykes**: These are vertical or near-vertical sheets of igneous rock that cut across existing rock layers. Among these options, **batholiths** are the largest intrusive igneous activities. Therefore, the correct answer is: **B) batholiths**.