Ineed with this arithmetic sequence:

t₁ = 1, the first term is 1 then

t₂ = 3, the second term is 3 then.

tₙ₊₂ = tₙ₊₁ + tₙ   is another way of saying, the number after "n+1", which is "n+2", is going to be coming from the sum of the current term "n" plus the one right after "n+1" OR the next term is coming from the sum of the last two behind it.

to make it less jumbled, in short,

t₃ = 1+3 = 4

t₄ = 3 + 4 = 7

t₅ = 4 + 7 = 11.

probably the last option

step-by-step explanation: