To determine how many children can attend the science center or the zoo while staying within the budget of $300, we need to consider the costs associated with each venue along with the cost for adults.
However, based on the responses provided:
- Zoo, 13 children
- Science Center, 18 children
- Science Center, 13 children
- Zoo, 18 children
From these options, we see the following:
- The Science Center option allows for 18 children to attend.
- The Zoo has options for 13 children and 18 children.
Assuming one adult's admission is included in the total budget, we can conclude the following:
- If the Science Center allows for 18 children with 1 adult present, this is the maximum number of children attending within the budget of $300.
- The Zoo offers less than or equal to 18 children, but that can only be confirmed if the prices for adult and child admissions are provided.
Based on the information given, the Science Center option with 18 children is the ideal choice under the budget of $300.
Therefore, the answer is Science Center, 18 children.