Concept:The pattern follows a simple addition rule. The number of lines added in each step is exactly the same as the number of lines present in the first figure.Explanation:Start with figure 1. Count its total lines. Then, to get figure 2, add the same number of lines to figure 1. This rule repeats for the next pair: from figure 3 to figure 4, add the same number of lines again (the number of lines in figure 1). Therefore, the missing figure (figure 4) is obtained by taking figure 3 and adding that fixed number of lines. No other pattern is needed. This simple step‑by‑step addition decides the correct shape.
